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The Humintell Blog March 26, 2012

Prosopagnosia (Face Blindness)

Most of us recognize people we know by looking at their faces.  It seems to be an automatic inherent brain function.

But what if you couldn’t delineate between people based on their faces?  There are some people who simply cannot distinguish between faces even those of loved ones such as a husband, wife, son or daughter.

Lesley Stahl and 60 Minutes reports on “face blindness”,  a neurological disorder where people cannot recognize faces.  In a few extreme cases face blind people can’t even recognize their own face.  There seems to be varying degrees to this disorder, whose scientific term is prosopagnosia, but the effects can be devastating for all sufferers.

Imagine a world where your children and even your spouse look like strangers.  It is hard to imagine yet normal functioning brains, like most of us have, encounter a similar problem recognizing faces including those of loved ones if pictures showing only the faces (not hair) are turned upside down.  This begs the question why is there this similarity and what part of the brain is responsible for facial recognition.

Science has not been able to concretely say what areas of the brain are exclusively dedicated to face processing. But they do know that there are two sides to this spectrum.  There are the sufferers of “face blindness” as mentioned above and there are a very few of us who find it difficult to NOT recognize a face even if they only encountered it briefly years ago.  The latter are dubbed “super recognizers”.

The short video below shows you the extremes of “face blindness”.

Filed Under: Nonverbal Behavior, Science

The Humintell Blog March 22, 2012

Children with Sleep Disordered Breathing Prone to Emotional Problems?

Children A new study conducted by researchers from Albert Einstein College of Medicine of Yeshiva University, suggests that young children who have Sleep Disordered Breathing (SDB) are more likely to develop behavioral problems including hyperactivity and aggressiveness.

PsyhCentral reports that this study is the largest of its kind and found that the disorder peaks in children between the ages of 2-6 years.  The main symptoms of SDB  include snoring and sleep apnea and the primary causes of SDB are enlarged tonsils or adenoids.

Lead researcher Karen Bonuck, Ph.D. purported , “This is the strongest evidence to date that snoring, mouth breathing, and apnea (abnormally long pauses in breathing during sleep) can have serious behavioral and social-emotional consequences for children.”

Parents filled out a questionnaire when their child was around four to seven years of age.  This Strengths and Difficulties Questionnaire is widely used to access behavior and rates for inattention and hyperactivity as well as emotional symptoms , peer difficulty and behavior problems.

A pertinent question would be if the study took in to consideration other factors for behavioral problems , and the answer is yes.  The study accounted for 15 additional factors such as socioeconomic status, maternal smoking during pregnancy and low birth-weight.

“We found that children with sleep-disordered breathing were from 40 to 100 percent more likely to develop neurobehavioral problems by age 7, compared with children without breathing problems,” said Bonuck.  “The biggest increase was in hyperactivity, but we saw significant increases across all five behavioral measures.”

Researchers suggest that SDB triggers behavioral problems by harming the brain with a decrease in oxygen levels; therefore, an increase in carbon dioxide levels in the prefrontal cortex, which interrupts the restorative process of sleep.

Filed Under: Science

The Humintell Blog March 16, 2012

Ask the Expert: Your Questions to Dr. Matsumoto Part 5

Humintell is happy to announce that the “Ask the Expert” series is back, with a fifth edition.

In the past we’ve posted several blogs with your (the viewer’s) questions to Humintell director Dr. Matsumoto and his answers.

Take a look at Part 1, Part 2, Part 3 and Part 4 by clicking on the appropriate links.

Ask your specific question(s) to Dr. Matsumoto in the comments section above. The questions can be related to anything: microexpressions, facial expressions of emotions in general, culture, emotion, nonverbal behavior, reading body language, recent research or detecting deception.

Please no inappropriate questions! Don’t forget we monitor all questions asked on the blog and inappropriate questions will be deleted.

We’ll select certain questions we think are interesting, interview Dr. Matsumoto and post the responses within two weeks.

Thanks for your participation!

For more information on Dr. Matsumoto, visit his website. Don’t forget to follow him on facebook and twitter.

Filed Under: Nonverbal Behavior, Science

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