What Does The Marshmallow Experiment Tell Us About Self-Control?

• January 24, 2012 by Bill Jenkins, Ph.D.

What is the mark of a good student? Is it innate intelligence? Is it attention span? Is it drive? Studies show that a major contributor to success might be as simple as having self-control. Take, for example, the marshmallow experiment.

Place a single marshmallow in front of a four-year old. Tell them they can eat it now or wait 15 minutes and have it along with a second marshmallow.

In the late 1960s and early 1970s, Walter Mischel of Stanford University performed this very experiment with over 500 nursery school children. What percentage do you think was able to control their impulses and hold out for marshmallow number two? In the end, fewer than one in three children were able to wait it out for the two marshmallows. At four years old, they simply had not developed the ability to delay gratification required for the challenge.

Paired with recent follow-up studies with 155 of the same individuals, the marshmallow experiment has come to shed fascinating insights on the inner workings of motivation and gratification, and how the two contribute to future success in school and life.

In the end, these studies have shown that children who were able to resist that first marshmallow were also more likely to be able to “avoid substance abuse, maintain a healthy body weight, and even perform better on the SAT than peers who couldn’t resist temptation.” In another study by Angela Duckworth at the University of Pennsylvania, self-control was a better predictor of academic success than IQ.

Self-control: Innate or teachable?

Given the proven connection between self-control and life success, the question arises: Is it possible to develop tools that help people enhance self-control?

As it turns out, self-control is the result of processes in two parts of the brain. Our rational thoughts, such as “If I wait, I get the second sweet,” take place in the pre-frontal cortex. More urgent decisions take place in the more primitive ventral striatum. Decisions like these that connect to deeper desire and reward depend on the environment around us. In this second case, the thought process might be, “Gee, that marshmallow sure looks soft, sweet and yummy, and I really want it. Right now.”  Research has shown that the rational thoughts can often be derailed by the primitive limbic system; this is no surprise, given the importance of these systems to the survival of our species over the eons.

So, can we strengthen the ability of the rational side to win out over the impulsive side? One solution might just lie in helping young people change how they focus on the environment around them, such as helping them differentiate between “hot” and “cool” cues.  The limbic system deals with “hot” cues, activating emotions like impulse, anger, sadness, happiness and satisfaction. On the other hand, “cool” cues are processed in the frontal lobe and activate cognitive systems that control functions like planning, problem solving, working memory and reasoning. Returning to a variant of our marshmallow experiment, studies have shown that students who were coached to focus on “cool” attributes like color or shape were better able to resist temptation than those who focused on “hot” cues like taste.

Toward impulse-control interventions

Research is now underway to figure out how educators can better harness some of these insights into the power of impulse- and self-control to help students better achieve success. At the KIPP Academy School in New York, the marshmallow experiment has been used as a way to initiate discussions about self-control with 6th graders and help them make better, more rational decisions.

Ultimately, the ability to produce concrete strategies and tools that help students learn to control their impulses will depend upon the results of investigations that are still in the works. But eventually, if we are taking the research to heart, success will likely follow.

For now, if your students seem a bit impulsive from time to time, a chat about marshmallows might be just the thing to get them thinking.

Further Reading:

Study Reveals Biology Behind Self-Control

Related Reading:

Tips for Teaching Positive Behavior

Building Your Child's Self-Confidence

Subscribe to this blog to get new blog posts right in your inbox and stay up to date on the science of learning!

Attend one of our popular webinars with thought leaders in learning. Live and pre-recorded webinars are available. Register today!

Categories: Brain Research, Family Focus, Reading & Learning

Tags: behavior, decision making, early learning, emotions in learning, Innate abilities, toddler

Six Reader-Selected Posts in Honor of Our 2nd Blogaversary

• January 5, 2012 by Norene Wiesen

It’s hard to believe, but it’s been two years since Dr. Bill Jenkins, Dr. Martha Burns, Sherrelle Walker, and a host of staff bloggers launched the Science of Learning blog.  In those two years we’ve learned a lot and had a ton of fun while creating posts we hoped you would find valuable.

In honor of the occasion, we’d like to share some of our readers’ favorite blog posts to date.  Here are just a few of the posts that readers have told us they’ve liked best: 

Kathy recommends: How Learning to Read Improves Brain Function

“As an adult literacy tutor, I was fascinated to read Stanislaus Dehaene's research showing that students who don't learn to read may experience severe difficulties with other forms of instruction as a result. This underscores the critical importance of funding such programs as Second Start Adult Literacy in Oakland, a city with a high level of adult illiteracy. And, fact-based research like this gives us a more powerful defense than emotion-based anecdotes, as we fight to protect city and state literacy funding. Thank you, Scientific Learning!”

Jennifer recommends two posts:

The Question Formulation Technique: 6 Steps to Help Students Ask Better Questions

“In a learning environment that tends increasingly towards 'teaching to the test,' our nation’s students are losing the skills crucial to a lifetime of knowledge acquisition.   Without good questions we cannot find good answers, good solutions, or grow good thinkers. This article outlines a tested method for teaching children how to go about formulating a complex and well thought out question.”

School Gardens: Sowing the Seeds of Experiential Learning

“School gardens are an invaluable interdisciplinary learning tool that gets students out of the classroom and allows them to use classroom knowledge in a real world scenario. A school garden acts as a place to learn, test out theories, and acquire life skills, as well as providing a space of beauty and an object of school pride.  In my time as a garden educator, I found the bounty of opportunity to teach in the garden near limitless, and believe that all children should have the opportunity to see what they can discover in the garden.” 

Teresa recommends two posts:

The Magical Combination of Love and Limits: Tips for Teaching Positive Behavior and Kindergarten Math Readiness and the Cardinal Principle

“All of the blogs have good information for parents, educators and caregivers, but the one I like the most is the one about love and limits. I think this post is applicable to all children.  The math readiness post is a close second, as I did not know about the "cardinal principle." If more parents knew about the information in the love and limits article, we would have happier and more well-adjusted children.”

Linda recommends: Bringing Learning to Life in the Classroom: Technology for 21st Century Schools

“I've got my backpack ready to take a 3-D field trip in learning!  This mode of education sounds incredibly exciting for students.  The sky will be the limit for learners who become engaged in this technology. Thank you Scientific Learning from a retired Maine Elementary School Counselor!”

Thanks so much for your readership and feedback.  We are already hard at work on more high quality posts for the new year, and are looking forward to sharing them with you.

Subscribe to this blog to get new blog posts right in your inbox and stay up to date on the science of learning!

Attend one of our popular webinars with thought leaders in learning. Live and pre-recorded webinars are available. Register today!

Categories: Brain Fitness, Brain Research, Family Focus, Reading & Learning

Tags: academic success, behavior, creativity, digital natives, health and well being, math, play, science, technology in education, toddler

Using the Power of Optimal Timing to Improve the Brain’s Ability to Learn

• December 13, 2011 by Bill Jenkins, Ph.D.

Learning is both a behavioral and biological process that is supported by the neurons in the brain over time.

When we learn, our brain cells physically change in response to stimulation, forming pathways to facilitate the connections we use repeatedly. For example, if you meet a person only once, you might not remember their name or recognize their face if you were to run into them on the street ten years on. On the other hand, if you see that person every day for a year, you will likely be able to recognize their face and remember their name much more readily should you not see that person for a long period of time.

Learning processes like these in the brain take predictable, measured amounts of time. While these rates will vary from person to person and nervous system to nervous system, we can depend upon certain relatively constant timeframes for learning and processing an understanding of some of these timeframes can allow educators to take maximum advantage of them. That’s why the Fast ForWord® products function on each of these scales by design, using the power of optimal timing to improve the brain’s ability to learn.

Learning depends upon a specific feedback loop characterized by timing between stimulus, response and reward ^[i]. Here are some of those timescales, along with how Fast ForWord works within each:

• Milliseconds: Auditory processing happens on the millisecond timescale. Fast ForWord helps improves auditory processing rate to ensure that students are able to “keep up” with auditory input such as spoken directions from their teacher.
• Seconds: Reinforcement learning happens on a scale of seconds and is achieved by interacting with one’s surroundings.  The Fast ForWord program’s reward system is based on this time scale, delivering rewards to students at just the right moment to maximize reinforcement learning, helping students get the most benefit from the program.
• Minutes: Our actions change based on how we perceive our surroundings. This kind of adaptation can take minutes. As students move through Fast ForWord exercises, they can see their performance results changing minute by minute. Being able to see such improvement helps motivate students toward greater learning. In other words, as they perceive the positive results of their actions, students adapt and learn to generate more of those positive results.
• Days or Weeks: Consolidation and maturation of memories can take days or weeks. When a student overcomes an obstacle in Fast ForWord, their confidence is strengthened and they not only learn the material, but they learn about their own capabilities and what success feels like. The memories of such experiences and the associated feelings – gathered and built upon over the days, weeks and months – lay the foundation to spur them on to future success. Such success in the classroom can lead to a greater drive to perform well in other areas, such as doing well on a test, winning on the athletic field, or successfully completing that college application.   We cannot underestimate the power of experiencing success and the sensation that it creates.

In the classroom, having an awareness of how long it takes for a student to assimilate and process certain kinds of information can add an entirely different rhythm to our instruction. In having such an understanding of how the brains of our students work, we can time our teaching to optimize learning and help our students achieve maximum success.

References:

[i] Why Time Matters Temporal Dynamics of Learning Center. University of California San Diego

Related Reading:

The Brain Gets Better at What it Does: Dr. Martha Burns on Brain Plasticity

Video Games: A New Perspective on Learning Content and Skills

 

Subscribe to this blog to get new blog posts right in your inbox and stay up to date on the science of learning!

Attend one of our popular webinars with thought leaders in learning. Live and pre-recorded webinars are available. Register today!

Categories: Brain Fitness, Brain Research, Reading & Learning

Tags: academic success, accelerate learning, auditory processing, brain plasticity, emotions in learning, how children learn, learning environment, motivating students, processing rate, teacher impact, technology in education

Creating Safe Learning Environments: How Classroom Management Influences Student Performance

• November 15, 2011 by Sherrelle Walker, M.A.

Think back to your grade school days. Did you ever experience a class where a bully ruled the roost? Were you ever bullied yourself?  Did you ever have a teacher who frightened you or who made you feel bad for underperforming? Or was there simply a disruptive class clown who constantly broke the classroom rhythm the teacher was trying so hard to create?

To varying degrees, all of the above situations can create what we might consider an unsafe learning environment. The teacher must take unquestionable ownership of the classroom, but do so in a positive, caring, constructive manner. The class succeeds or fails on his or her decisions and management of the entire learning experience.

Why is managing that classroom and creating that safe environment where learning can happen so essential? In her article on the value of safe learning environments, Lora Desautels, Ph.D., reminds us that during adolescence, the part of the brain that controls emotional responses—the amygdala—develops faster than other centers of the brain while the prefrontal cortex, a center for logical thought and rational response, develops later. Thus, our students are more effectively wired for emotion than logic. Their systems are primed to react to situations with feelings and they have not yet fully developed the ability to apply logical thinking to keep those feelings in check.

It follows that the stimuli within and surrounding the learning environment can have great effects on these emotional responses and can serve to either support or impair the learning process. The bully, the clown, and the teacher can all have a profound effect on how well a student learns.

So what can we as educators do to bring down the levels of stress in our classrooms and make sure that our learning environments are safe places where optimal learning can take place? How can we create spaces that keep the emotional responses as positive and free of stress and anxiety as possible so that we can most effectively engage fresh young minds?

Rebecca Alber has written a wonderful list of twenty ways to create a safe learning environment for Edutopia, which I highly recommend. Her advice for educators includes building community, setting clear boundaries, smiling and laughing a lot, and getting to know each individual student, as well as allowing them to get to know something personal about you. She says we should sit with our students. We should keep our expectations for student performance and behavior high. And we should incorporate art and music into the day.

I agree with Alber’s top twenty. I find it wonderful that she strikes a balance between creating a space that is fun and welcoming and full of laughter, but also one where expectations are set and failures become learning opportunities. All of them can do wonders when it comes to creating a space where students can let go of their stresses and anxieties and free their minds to absorb all the wonderful learning we have in store for them.

In the end, the responsibility for implementing these kinds of principles and removing the stressors that can impair learning lie with us, the educators. Creating that safe learning environment is a multifaceted challenge that, when done well, allows students to flourish.

Related Reading:

Tapping the Source: Finding and Using the Innate Student Passion for Learning

Inspiring Students to Dream, Learn and Grow

Subscribe to this blog to get new blog posts right in your inbox and stay up to date on the science of learning!

Attend one of our popular webinars with thought leaders in learning. Live and pre-recorded webinars are available. Register today!

Categories: Brain Research, Education Trends, Reading & Learning

Tags: academic success, behavior, brain development, emotions in learning, health and well being, how children learn, learning environment, self-esteem, teacher impact

Modeling Healthy Choices: Three Habits for Optimal Brain Health

• November 10, 2011 by Bill Jenkins, Ph.D.

Isaac Asimov said, “The human brain…is the most complicated organization of matter that we know.”^[i] And it’s true.  Our amazing brains are both a product of biological evolution and a reflection of the world around us.

First, the stuff of the brain – grey matter, white matter, fluids, blood vessels – is made up of nutrients from the plants and animals we consume from the world around us.

Second, in terms of brain function, our interaction with our environment has a major impact on both brain structure and brain health. Extensive and ongoing research into “brain plasticity” has proven that everything we experience, everything we see or touch or hear, creates a perception that changes the wiring of the brain itself.

Given that our brains are a product of evolution (which is outside of our control) and environment (which is only partially under our control, and often less than ideal), how can we keep our brains as healthy as possible, from birth all the way through old age?

The pathway to optimal brain health comes from the small choices we make every day. By making healthy choices on a regular basis, and particularly by turning those choices into habits, we can help our brains stay healthy while also helping the young people in our lives learn positive self-care skills that can last a lifetime.

Here are three important steps everyone can take toward optimal brain health:

• Eating more healthy foods and minimizing unhealthy foods. Eating foods that provide nutrients to build healthy brain tissues is essential. Foods high in omega-3 fatty acids, such as salmon, avocados and nuts, along with foods high in potassium like bananas promote brain function. Also, lowering our intake of sodium can reduce blood pressure, a factor that can, if left unchecked, lead to stroke.
• Engaging in regular physical exercise. Like every other organ and tissue in the body, the brain needs healthy blood flow to function at its highest possible levels. Physical exercise helps improve and maintain cardio vascular health, allowing the body to efficiently and effectively deliver oxygen and nutrients to the brain. But it can do more for us. In students, educators have reported physical exercise resulting in less disruptive behavior, higher self esteem, less anxiety and greater attentiveness. Dr. John Ratey of Harvard University describes exercise as “food for the brain.”
• Giving your brain practice in the activities you want it to be good at. The neural pathways that our brains create over time, as we have said, are a direct result of the stimuli that we receive. That’s why through practice and training, a child can work to shape their brain into that of a great musician or mathematician or martial artist. At the same time, we must remember that negative input also affects our wiring. For example, excessive amounts of watching television and playing video games has been shown to have concerning chemical and biological effects, such as the suppression of melatonin release, elevated blood cholesterol and an increased chance of coronary heart disease – and these effects should be taken into consideration as we make decisions about how we spend our time.

The brain might be the most complicated organization of matter we know of, but that doesn’t make it difficult to keep healthy. By learning to choose the right foods, the right activities, and the right input, we can each take control – at any age – of building the brains we want. 

Children can begin learning to make good choices from the earliest ages, but it is up to parents and teachers to model these healthy habits of mind.  

Yes, that means you.

References:

[i] J. Hooper and D. Teresi. The Three-Pound Universe. Macmillan Publishing Company. 1^st edition 1986.

Related Reading:

Lifelong Learning and the Plastic Brain

5 Paths to Brain Health: Tips from Dr. Paul Nussbaum

Subscribe to this blog to get new blog posts right in your inbox and stay up to date on the science of learning!

Attend one of our popular webinars with thought leaders in learning. Live and pre-recorded webinars are available. Register today!

Categories: Brain Fitness, Brain Research, Family Focus, Reading & Learning

Tags: behavior, brain plasticity, brain training, health and well being, nutrition, self-esteem, teacher impact

Of Rats and Men: How Stress Affects the Brain

• November 1, 2011 by Bill Jenkins, Ph.D.

You have probably experienced that feeling of not being as mentally sharp as normal when you are under a lot of stress. Recent research has demonstrated that the human brain functions less well under stress, and we now know that stress causes actual physical changes in the brain, and those changes are directly associated with a decrease in brain function.

The original research in this area was first performed with rats as subjects. Later tests with human subjects generated similar results. Let’s take a quick look at each case:

Case #1: The Rats. Bruce McEwen and John Morrison at Mount Sinai Medical Center found that in the rat’s brain under stress, nerve cells of the prefrontal cortex shrink, resulting in slower performance on attention-shifting tasks. On the other hand, neurons in the orbital frontal cortex used response-reversal tasks actually grew larger. A response-reversal task is one where a subject is reinforced for giving response A to stimulus A and response B to stimulus B. Then, they are placed in a reversed situation where they must give response B to stimulus A and response A to stimulus B. The test measures how well they can “reverse” their responses. In the face of such tasks, the plastic brains of the rats adapted to the stress stimuli and physically changed to address the conditions.

Case #2: The Humans. Conor Liston and B. J. Casey of the Sackler Institute used brain imaging to study male medical students preparing for their board exams and compared them to healthy students who were not experiencing the stress of studying for exams. The students were asked to perform two different mental tasks while their brains were being scanned with MRI. The stressed students were less able to shift their attention from one task to another and showed changes in the prefrontal cortex. Interestingly, their ability to perform response-reversal tasks was not impaired by stress; subjects were still able to “change their minds” when presented with information that changed their responses to a certain situation.

In both cases, we see experiments producing similar results when it comes to attention-shifting tasks and response-reversal tasks. Not only that, tests showed that the physiological effects were temporary in the rats as well as the humans. When Liston and Casey repeated the brain scans in their med students one month after the board exams were over -- and the stress was gone from the equation -- they found that the attention shifting ability and the brain scans of the stressed students had returned to normal.

So we are able to conclude that while stress causes changes to the brain and decreases some brain functions, the brain is able to recover fairly quickly. Once again, the research demonstrates how the plastic neural network of the brain – whether rat or human -- is constantly changing to address the stimuli it experiences and function at optimal capacity for its given external environment.

Further research on the effects of stress on the brain may help us to better understand how people respond to stress and could help in the understanding and treatment of stress-associated psychiatric disorders.

References:

Stress disrupts human thinking, but the brain can bounce back. January 27, 2009.

Related Reading:

Separating Brain Fact from Brain Fiction: Debunking a Few Neuroscience Myths

Left vs. Right: What Your Brain Hemispheres Are Really Up To

Subscribe to this blog to get new blog posts right in your inbox and stay up to date on the science of learning!

Attend one of our popular webinars with thought leaders in learning. Live and pre-recorded webinars are available. Register today!

Categories: Brain Research, Reading & Learning

Tags: attention, brain plasticity, cognitive skills, decision making, health and well being, science

Recognizing Emotions After Brain Injury: Re-Learning a Critical Social Skill

• October 4, 2011 by Bill Jenkins, Ph.D.

For most of us, interpreting and expressing emotion is something deeply instinctive. But what happens when that ability to express ourselves or read another’s emotions goes awry? Imagine what can happen to a student’s classroom experience if they can’t make sense of something as simple as their teacher’s facial expression. In the past, these kinds of students have been seen as having behavior problems. So how can we help them succeed?

Research has shown that people with traumatic brain injuries often experience this same inability to interpret and respond to emotions, a condition called "affect recognition."

Barry Willer, professor of psychiatry and specialist in TBI (traumatic brain injury) of the University of Buffalo, tells the story of a man and his wife who came into his office with a problem. The woman had experienced a mild traumatic brain injury. While her husband was supporting her recovery as best he could, she consistently described his attitude as “indifferent. “ He was frustrated, to say the least.

“His wife didn’t know she wasn’t recognizing his emotions,” said Willer, recounting the story in a 2009 interview with Insciences Journal , “and he had no idea what was going on.”

This couple is by no means alone. Nearly fifty percent of all traumatic brain injuries result in problems interpreting and expressing emotion.

As educators, being able to connect with our students at an emotional level is essential to classroom success. Without that connection, the learning process can quite easily come to a halt. Thankfully, Willer has demonstrated that there is hope for this population, and that the human brain is quite capable of re-learning how to understand facial expressions and use that information to interpret emotion.

Willer and his team have developed two specific interventions that have shown positive results:

• Facial Affect Recognition (FAR): Individuals view faces on a computer screen that directs them to concentrate on specific elements of each face. "Look at the eyes. What are the eyes doing? What is the mouth doing?" and asks them to name the emotion.
• Stories of Emotional Inference (SEI): Participants are asked to read stories that describe events, along with character’s beliefs, wants and behaviors. From this information, participants are asked to infer the character’s emotions.

"What was so exciting about our preliminary study," says Willer, "is that someone may lose the ability to recognize emotions, but even 10 years later, they can re–learn the skill if given the right assistance."

As it turns out, the only emotion that traumatic brain injuries do not erase is "happy," which is very hard–wired and has an extensive amount of "redundant circuitry." Says Willer, "I don’t know how that happened, but we all can be glad it did."

For further reading:  Milders, M., Fuchs, S., & Crawford, J. R. Neuropsychological impairments and changes in emotional and social behaviour following severe traumatic brain injury. Journal of Clinical and Experimental Neuropsychology, 25, 2003. 157-172.

Related Reading:

Lifelong Learning and the Plastic Brain

5 Paths to Brain Health: Tips From Dr. Paul Nussbaum

Subscribe to this blog to get new blog posts right in your inbox and stay up to date on the science of learning!

Attend one of our popular webinars with thought leaders in learning. Live and pre-recorded webinars are available. Register today!

Categories: Brain Fitness, Brain Research, Reading & Learning

Tags: adaptivity, behavior, brain plasticity, brain training, cognitive skills, effort, memory, processing

Neural Prostheses: The Melding of Hardware, Software and Wetware

• September 20, 2011 by Bill Jenkins, Ph.D.

Earlier this year, I wrote about a researcher named Dr. Miguel Nicolelis at Duke University Medical Center and his work with a monkey named Aurora. Through placing implants in Aurora’s skull, Nicolelis was able to record Aurora’s motor nerve signals as she used a joystick to play a simple video game. He then used a computer algorithm to convert those signals into code to power a robotic arm. Over time, because of her brain’s ability to adapt and learn, Aurora taught herself how to control the movements of that robotic arm by just thinking about it.

What we see in Nicolelis’s work is the complex interplay of three different elements of a neural prosthetic system: hardware, software, and what has been come to be known as “wetware.”

• Hardware refers to the machine part of the system. This consists of the wires, computers, circuits, implants and manufactured devices that comprise the system.
• Software refers to the set of instructions, data and algorithms – in other words, the set of rules – that govern the function and operation of the hardware.
• Wetware refers to the combination of biological elements involved in the system, generally including muscles, hormones, nerves and the brain.

Through choreographing the delicate dance between these three systemic elements, biomedical professionals are becoming more able to develop neural prosthetics that continue to improve the quality of life for any number of disabilities, substituting motor, sensory or cognitive capabilities that have been damaged as a result of injury or disease.

Today, biomedical research has given rise to any number of neural prostheses. Visual prosthetics stimulate the optic nerve to counter certain types of blindness. Spinal cord stimulators induce sensations to mask and control pain. Pacemakers work with the muscle and nerves of the heart to monitor and regulate the heartbeat and control fibrillation.

One of the most common applications of the neural prosthesis concept is in the cochlear implant. Dr. Michael Merzenich, professor emeritus and neuroscientist, was the Principal Investigator back during the development of the first cochlear implants at the University of California, San Francisco. The work showed that in as little as six months, patients were able to develop remarkable speech discrimination abilities. It was found that speech discrimination abilities improved over time due to the brain’s plastic ability to change and adapt to these new inputs.

According to the NIH’s National Institute on Deafness and Other Communications Disorders, over 59,000 adults and children have cochlear implants. Just like Aurora’s robotic arm, a cochlear implant involves the integration of hardware, software and wetware. But instead of using motor neurons to articulate robotic fingers, cochlear implants form the technological bridge between the world of sound and the ability to perceive that sound in someone whose ears cannot convert sound vibrations to a nerve impulse. While the ones we developed had a single channel, today’s devices have up to 120, which allows for better input fidelity through stimulating different parts of the auditory nerve.

Of the three elements of the neural prosthetic system, hardware, software and wetware, the only one of them that can be expected – even depended upon – to change over time is the wetware. Both because of normal development and brain plasticity, an individual’s ability to effectively use neural prosthetic will naturally change over time as the individual’s own nervous system adapts to make better use of the hardware and software.

As Dr. Nicolelis demonstrated with Aurora, wetware is an amazingly malleable apparatus. We might imagine these neural prosthetic systems as fantastically complex in terms of their hardware and software. That said, research out of the University of Washington, Seattle, has suggested that, because of brain plasticity, we may be able to use simpler algorithms in the external hardware and software, and depend upon the plasticity of the wetware to make optimal use of these devices.

In the end, we as humans, with our drive to heal and discover, seem to have a limitless ability to develop innovations to remedy our physical ills. And yet, it is the plasticity of our nervous system’s innate ability to adapt that will apparently allow us to make the most of these innovations.

For further reading:

Fallon, J. B., Irvine, D. Shepherd, R. Neural Prostheses and Brain Plasticity. J Neural Eng. 2009 December.

Moritz, C. T., Perlmutter, S. I., Ftez, E. E. Direct Control of Paralysed Muscles by Cortical Neurons. Nature. 2008 December.

Related Reading:

A Gymnast, A Cursor, and A Monkey Named Aurora

Dr. Martha Burns on Brain Plasticity

Subscribe to this blog to get new blog posts right in your inbox and stay up to date on the science of learning!

Attend one of our popular webinars with thought leaders in learning. Live and pre-recorded webinars are available. Register today!

Categories: Brain Fitness, Brain Research, Reading & Learning

Tags: auditory processing, brain plasticity, brain training, cognitive skills, innovation, processing, science

Improving Auditory Processing in Children with Autism Spectrum Disorder

• September 8, 2011 by Barbara Calhoun, Ph.D

Summary:  A recent study by Nicole Russo of Northwestern University and her colleagues, published in Behavioral and Brain Functions in 2010, evaluates whether auditory training programs such as Fast ForWord® can alleviate the auditory processing deficits so frequently seen in ASD children.

Russo’s study examines how effectively Fast ForWord could strengthen the auditory processing of speech sounds in similar ASD children. Her team hypothesized that such training would modify the neural processing of sound in children with ASD, and that such children “would show improvement in the neural encoding of speech syllables, including faster response timing, greater fidelity of the response relative to the stimulus, and more accurate pitch encoding over time.” (p. 3)

Results showed that training appeared to have benefited all participants in the experimental group, affecting their neural transcription of speech. According to Russo and her team, “each of the five children who underwent FFW training improved on at least one measure of cortical speech processing relative to the control group, with response timing improving in both quiet and noise for some children.” (p. 13)

Russo and her team were able to conclude that directed auditory training using Fast ForWord shows great promise for improving auditory processing in children with ASD – specifically, those high-functioning children who have hearing in the typical range. 

 

Content:  This study was published in Behavioral and Brain Functions in 2010 and was done at Northwestern University by Dr. Nicole Russo and her colleagues.   It evaluates whether auditory training programs, such as Fast ForWord, can alleviate the auditory processing deficits so frequently seen in children with autism spectrum disorders. Children with autism spectrum disorders or ASD demonstrate impairments in their use of language for social and communicative purposes.  These impairments are typically apparent prior to three years of age.

There is emerging evidence that the neural encoding of speech sounds may be impaired in some children with autism spectrum disorders leading to atypical auditory brainstem responses to speech sounds and difficulties processing speech-specific stimuli such as detecting speech in background noise. 

Since the Fast ForWord products provide auditory training including listening and sound-sequencing exercises, as well as exercises on auditory attention, auditory discrimination, phoneme discrimination, and memory, Dr Russo and her colleagues were interested in investigating the impact of the products on children with ASD.

High-functioning children with ASD who had participated in an earlier study were invited to partake in this one.   The children all had a formal diagnosis of autism spectrum disorder.  They had typical peripheral hearing, average mental abilities and average or near-average language scores.

Eleven boys with an average age of 9.2 completed the entire testing protocol and met the criteria.   The children were then given the option of taking part in the intensive auditory training. Five children opted for the training and formed the experimental group.  The other six children who opted not to take part in the training were willing to take part in the post-test and formed the control group. There was not a significant difference between the two groups in terms of age, IQ, or language ability.

Students in the experimental group used the intense intervention: the Fast ForWord Language Series which entailed the Fast ForWord Language product for an average for 20 days followed by Fast ForWord Language to Reading for an average of 32 days.

Auditory brainstem responses (ABRs) and Event-Related Potentials (ERP’s) were recorded from both groups.  These tests measure the size and the timing of electrical activity that occurs in the brainstem and brain in response to a sound.  In this case, the sounds were synthesized vowels that were heard in the presence of background noise, as well as in quiet.  Auditory brainstem responses are subcortical events occurring less than 10 ms after the stimuli is presented while  event-related potentials are cortical events occurring a few hundred milliseconds after the stimuli is presented.  Both ABR’s and ERP’s measure the aggregate response of neurons and neither requires active involvement by the participant. 

Due to the small number of participants, and the variations between them, the analysis involved defining a “typical change” as the average change for students in the control group plus one standard deviation, and defining a “significant change” for one of the participants as a change that was more than the control’s change plus one standard deviation. 

The researchers were particularly interested in subjects that had two or more measures with significant change.  All five students improved more than one standard deviation on at least two tests. The researchers concluded that there is Initial evidence that directed auditory training may improve auditory processing in a specific population of children with ASD – specifically high-functioning children with ASD who have hearing in the typical range.

They also concluded that computer-based training may benefit some children with ASD by acting on biological processes.

Read the complete report on this research at the link below:

Nicole M Russo, N., Hornickel, J., Nicol, T. Zeckler, S. Kraus, N. Biological changes in auditory function following training in children with autism spectrum disorders. Behavioral and Brain Functions 2010, 6:60.

Related Reading:

Understanding Autism in Children

Language Skills Increase 1.8 Years After 30 Days Using Fast ForWord

Subscribe to this blog to get new blog posts right in your inbox and stay up to date on the science of learning!

Attend one of our popular webinars with thought leaders in learning. Live and pre-recorded webinars are available. Register today!

Categories: Brain Fitness, Brain Research, Fast ForWord, Reading & Learning, Scientific Learning Research

Tags: auditory processing, autism, brain training, learning disabilities, processing rate, video

Separating Brain Fact from Brain Fiction: Debunking a Few Neuroscience Myths

• September 1, 2011 by Bill Jenkins, Ph.D.

The brain is one of the most mysterious and misunderstood organs in the body. It represents the seat of our judgment, our senses, perceptions and our creativity.  More than any other aspect of our anatomy, the uniqueness of our brains is at the core of what makes us truly human.

While neuroscience advances every day, there are a number of myths about the brain that are accepted by many people as fact. As a scientist, I and my colleagues have worked to uncover the brain’s truths.  So what are some of these myths – and what are the true stories behind them to the best of our scientific knowledge?

Fiction: We use only a small percentage of our brains.

Fact: General thinking is that we use only about 10% of our brains. Nothing could be further from the truth. Brain scans such as MRI and PET scans show that we regularly use all parts of our brains. Certainly, different areas of the brain are activated during different types of tasks, and some parts of the brain are less critical to support vital functions than others. But as even small brain injuries can show, every part of the brain performs essential functions in how we process, communicate with, and move through the world around us. Read more at http://www.scientificamerican.com/article.cfm?id=do-we-really-use-only-10.

Fiction: The wrinkles on the surface of the brain appear and become more pronounced as we learn.

Fact: The ridges and crannies – more correctly, the gyri and sulci – on the surface of the brain actually all appear by the time a fetus is 40 weeks old. As the human brain evolved, gyri and sulci appeared as a result of the brain having to fold in upon itself as it grew larger to fit inside a correctly proportioned skull. While the gyri and sulci do not change as we learn, the brain itself – as we know from research in brain plasticity --  does continue to change throughout our lives.

Fiction: Brain damage is permanent.

This is an interesting myth, in that it is the result of ambiguous language. The brain is made up of a collection of neurons – brain cells – that are all networked together. When the brain suffers trauma and neurons are destroyed or damaged, those neurons cannot regenerate. In that sense, the damage to them is permanent. That said, those neurons are linked together at synapses to form complete networks. While a single neuron cannot be repaired, the pathways and connections throughout the brain can rewire themselves and form new pathways. If a connection is lost due to injury, we can reestablish that connection if the damage is not so acute that the entire network cannot be rewired. For a scholarly treatment of how the brain recovers from injury, see http://web.uvic.ca/~skelton/Teaching/General%20Readings/Robertson%20Murre%201999.pdf.

Fiction: A person is either “left-brained” or “right-brained.”

The theory goes that left-brained people are more logical and right-brained people are more creative. Certainly there are asymmetries associated with locations of certain brain functions. For example, mathematical computation and the grammar and vocabulary aspects of language seem to be controlled in most people in the left brain, while numerical approximation and comparison, along with interpretive aspects of language like prosody and intonation, appear to be controlled in the right.  These ideas date back to original research done in 1861 by French physician Pierre Paul Broca. Today, through MRI and PET imaging techniques, we have a much more complex view of the way the brain’s hemispheres control functions and interact with one another. The two perform a complex dance of information exchange that gives rise to our abilities. For a look at results of some of these MRI tests in children, see http://www.ncbi.nlm.nih.gov/pubmed/8780075.

Fiction: There are five senses: sight, smell, hearing, taste and touch.

These five are simply the ones that we are most aware of in our conscious minds, but we perceive and sense the world in a great many other ways. For example, “proprioconception” describes how our bodies are oriented in the world. “Nociception” is how we perceive pain. We sense changes in temperature. We sense balance. We feel thirst and hunger. We sense the passage of time. For a quick and easy description of the senses – in humans as well as other species – see http://en.wikipedia.org/wiki/Sense.

As scientists continue our search for the facts, there is much we don’t know; we are expanding our knowledge of the brain’s truths every day. As new discoveries are made, it is natural for facts to become distorted and reinterpreted with each new telling.   As educators and scientists, we should take the time to explain the truths about the brain and rectify any misunderstandings we may hear others repeat. The brain is amazing, and communicating the truths about it will further society’s understanding as a whole.

Related Reading:

Dr. Martha Burns on Brain Plasticity

How Learning to Read Improves Brain Function

Subscribe to this blog to get new blog posts right in your inbox and stay up to date on the science of learning!

Attend one of our popular webinars with thought leaders in learning. Live and pre-recorded webinars are available. Register today!

Categories: Brain Research, Reading & Learning

Tags: brain development, brain training, cognitive skills, decision making, infant brain, Innate abilities, processing