There are many reasons that I found this study so fascinating and worthwhile as to deserve its own independent post during Autism Month:

  • First, autism runs in my family, so most studies concerning autism interest me. It is clear to me that my mother, sister, nieces, and I are all autistic. La Petite Fille, however, is the only one formally diagnosed.
  • Second, I have prosopagnosia or face blindness. I do not have it to the degree that I cannot recognize anyone including my own mother, but I find it difficult to recognize faces and confuse people I find similar in appearance, which is a never ending source of amusement for my students and source of social awkwardness as I dance around trying to sort out who this person is that seems to know me.
  • And, third, I have concerns about the attempt to “cure” autism. There are symptoms that would be useful to mitigate their negative impact just from an improvement in quality of life point of view, but there are others that have been and will continue to be useful to human kind. It is a tricky tightrope to walk, and the topic of another post.

Prosopagnosia or Face Blindness

Prosopagnosia is a neurological disorder that interferes with the ability to process facial features. It can range in severity from being unable to recognize any face based solely on the facial features to having only mild impairment so that most faces are distinguishable.

What? How is this even possible? A big nose is a big nose, right? Who can’t recognize that?

This is the deal, there is a place in the brain called the fusiform gyrus. A gyrus is the fold on the surface of the brain. It is what gives it that familiar wrinkled look. Those folds, however, are only on the cerebral cortex or the outermost layer of the brain, that which gives human beings their greatest distinction from other higher order mammals.

The fusiform gyrus is a major fold in the brain — they ain’t random because they occur in the same places and same sizes with minor variations. It spans the occipital and temporal lobes at the bottom. The occipital lobe is where we process visual input. It sits at the back of the brain. The temporal lobes is a kind of grab bag of stuff including auditory, spatial, and memory processing. It sits at the sides of the brain around your temple, thus the name.

The fusiform gyrus in all of its glory is responsible for categorizing visual input, particularly faces, bodies, reading, and objects. It is used when many small details are required to recognize an object such as a familiar face. It is not used to recognize objects that do not require attunement to as many details, like say a fan. Interestingly, the right hemisphere is more often used to recognize faces than the left.

When it is damaged from stroke or other malady or congenitally dysfunctional, individuals will have an array of symptoms: difficulty in recognizing familiar individuals whether in person or in photographs, including themselves, confusing plots and characters in movies or plays, and an inability to differentiate between people wearing uniforms or similar clothing.

Prosopagnosia and Autism

I’m trusting that the reader has more than a passing understanding of autism. If not, please see the links to previous autism posts.

Since autism involves social impairments, it should come as no surprise that many people with autism have difficulties with faces. Alexander Li Cohen is a child neurologist leading the Laboratory of Translational Neuroimaging, which is part of the Autism Spectrum Center at Boston Children’s Hospital  who noticed this relationship, too. So, you’re as smart as a PhD or MD who studies this all the time. Congratulations.

Because Cohen can DO something with his insights, he set about testing people with autism for their ability to recognize faces. And, wouldn’t you know it, he found that people with autism did trouble with faces also had more severe symptoms of autism AND worser social abilities. So, which came first the autism or the prosopagnosia?

Well, wouldn’t you know it, Cohen wondered that exact same thing! And again, he could actually DO something about it. He began to study children who had damage to their fusiform gyri due to pathology. He found that a whopping 40% who had damage to their ability to recognize faces went on to develop autism when they hadn’t had autism before.

Well, now ain’t that something.

Treating Autism Symptoms by Using Neural Networks

Cohen has this idea that if social impairments that autistic people have is connected to their inability to recognize faces or process faces, then it might could be mitigated by changing the neural network involved in processing facial information.

Since it is known that facial recognition involves a complex neural network and that people with facial recognition difficulty can experience impairments anywhere along the network, then if those networks could be altered, perhaps they could improve their facial recognition. It makes sense, don’t it?

How can you alter the functioning of neural networks?

Uh, doc, you wanna mess around with the wiring of my brain? Really? We have a long history of messing shit up when we try this. Henry Molaison anyone?

Cohen and his lab are interested in the possibilities that CBT, fMRI-neurofeedback, or TMS. Well, that doesn’t seem so bad, I guess.

This is a watch-this-space kinda situation. This research is ongoing. In fact, it is so much so that Cohen et al. are recruiting people with and without autism 15 – 18 years of age to participate in their facial recognition impairment research. If interested in participating, visit their website… and let us know in the comments, okay?

The idea that you can map the neural networks responsible for specific behaviors onto the brain and then alter those behaviors by altering those networks is an exciting and scary one. Having lived through the very violent meltdowns of my sister, especially as the focal point of most of them when we were growing up, and having witnessed a number of kids meltdown during the course of a regular school day, I kinda would like to know if we could manage that kind of violent aggressive behavior better… or even with mass shooters, you know? But, given the growing fascist movement of the country, it is entirely possible that this style of research could be used to commit depraved acts of evil on par with those of Nazi Germany.

Let us know what you think in the comments, okay?

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a crowded movie theater with audience laughing
a crowded movie theater with audience laughing