Neuroscience

Articles and news from the latest research reports.

Posts tagged savants

667 notes

Exploring Temple Grandin’s Brain

The world’s most famous person with autism uses her unusual cognitive abilities to reduce animal suffering.

Animal scientist Temple Grandin has an extraordinary mind. Probably the world’s most famous person with autism, she designed widely used livestock handling systems to reduce animal suffering. She is not just autistic but an autistic savant, meaning that she has unusual cognitive abilities, such as a photographic memory and excellent spatial skills. She “thinks in pictures,” she says, helping her understand what animals perceive.

Her brain is equally remarkable, according to a team of neuroimaging experts who study brain changes in autism at the University of Utah. Neuroscientist Jason Cooperrider and colleagues scanned Grandin’s brain using three different methods: high-resolution magnetic resonance imaging (MRI), which captures the structure of the brain; diffusion tensor imaging (DTI), a method to trace the connections between brain regions; and functional MRI, which indicates brain activity. The images reveal an unusual neural landscape that reflects Grandin’s deficits and talents. 

Overall, the right side of her brain dominates. One theory of autistic savantism suggests that during fetal development or early in life, some developmental abnormality affects the brain’s left side, resulting in the difficulties that many autistic people have with words and social interaction, functions typically processed by the left hemisphere.

To make up for this, the right hemisphere sometimes overcompensates, which can lead to special abilities in music, art, and visual memory. Savantism is not well-understood, but between a tenth and a third of people with autism may have some of these abilities. 

Cooperrider’s team also discovered that Grandin’s amygdala, the almond-shaped organ said to play an important role in emotional processing, is larger than normal. This was not a surprising finding because among other functions, this region processes fear and anxiety, affective states often affected by autism. Her fusiform gyrus is smaller than normal—also not a surprise, since this region is involved in recognizing faces, a social skill that autism may disrupt.

Every brain is different, especially where autism is concerned, and Cooperrider’s study compares Grandin’s brain with only three controls, not enough to draw broad conclusions. But some of the patterns Cooperrider and his colleagues discovered back up other studies, and suggest new regions to explore.

Filed under brain brain development Temple Grandin autism savants neuroimaging neuroscience psychology science

333 notes

Kim Peek, The Real Rain Man Kim Peek, who lent inspiration to the fictional character Raymond Babbitt—played by Dustin Hoffman—in the movie Rain Man, was a remarkable savant. A savant is an individual who—with little or no apparent effort—completes intellectual tasks that would be impossible for ordinary people to master. Kim Peek’s special abilities started early, around the age of a year and a half. He could read both pages of an open book at once, one page with one eye and the other with the other eye. This style of reading continued until his dead in 2009. His reading comprehension was impressive. He would retain 98 percent of the information he read. Since he spent most of his days in the library with his dad, he quickly made it through thousands of books, encyclopedia and maps. He could read a thick book in an hour and remember just about anything in it. Because he could quickly absorb loads of information and recall it when necessary, his condition made him a living encyclopedia and a walking GPS. He could provide driving directions between almost any two cities in the world. He could also do calendar calculations (“which day was June 15, 1632?”) and remember old baseball scores and a vast amount of musical, historical and political facts. His memory abilities were astounding. Unlike many individuals with savant syndrome, Kim Peek was not afflicted with autistic spectrum disorder. Though he was strongly introverted, he did not have difficulties with social understanding and communication. The main cause of his remarkable abilities seems to have been the lack of connections between his brain’s two hemispheres. An MRI scan revealed an absence of the corpus callosum, the anterior commissure and the hippocampal commissure, the parts of the neurological system that transfer information between hemispheres. In some sense Kim was a natural born split-brain patient. Read more

Kim Peek, The Real Rain Man

Kim Peek, who lent inspiration to the fictional character Raymond Babbitt—played by Dustin Hoffman—in the movie Rain Man, was a remarkable savant. A savant is an individual who—with little or no apparent effort—completes intellectual tasks that would be impossible for ordinary people to master.

Kim Peek’s special abilities started early, around the age of a year and a half. He could read both pages of an open book at once, one page with one eye and the other with the other eye. This style of reading continued until his dead in 2009. His reading comprehension was impressive. He would retain 98 percent of the information he read. Since he spent most of his days in the library with his dad, he quickly made it through thousands of books, encyclopedia and maps. He could read a thick book in an hour and remember just about anything in it. Because he could quickly absorb loads of information and recall it when necessary, his condition made him a living encyclopedia and a walking GPS. He could provide driving directions between almost any two cities in the world. He could also do calendar calculations (“which day was June 15, 1632?”) and remember old baseball scores and a vast amount of musical, historical and political facts. His memory abilities were astounding.

Unlike many individuals with savant syndrome, Kim Peek was not afflicted with autistic spectrum disorder. Though he was strongly introverted, he did not have difficulties with social understanding and communication. The main cause of his remarkable abilities seems to have been the lack of connections between his brain’s two hemispheres. An MRI scan revealed an absence of the corpus callosum, the anterior commissure and the hippocampal commissure, the parts of the neurological system that transfer information between hemispheres. In some sense Kim was a natural born split-brain patient.

Read more

Filed under ACC Kim Peek congenital disorders corpus callosum memory savants split-brain neuroscience science

84 notes

Researchers reveal first brain study of Temple Grandin Temple Grandin, perhaps the world’s most famous person with autism, has exceptional nonverbal intelligence and spatial memory, and her brain has a host of structural and functional differences compared with the brains of controls, according to a presentation Saturday at the 2012 Society for Neuroscience annual meeting in New Orleans. Grandin, professor of animal sciences at Colorado State University, is an outspoken advocate for autism research and awareness. She is known as a ‘savant,’ or a person who shows characteristic social deficits of autism and yet also has some exceptional abilities. For instance, she has extremely sharp visual acuity. This is the first study to take a close look at Grandin’s brain, and one of the first to look at the brains of savants.

Researchers reveal first brain study of Temple Grandin

Temple Grandin, perhaps the world’s most famous person with autism, has exceptional nonverbal intelligence and spatial memory, and her brain has a host of structural and functional differences compared with the brains of controls, according to a presentation Saturday at the 2012 Society for Neuroscience annual meeting in New Orleans.

Grandin, professor of animal sciences at Colorado State University, is an outspoken advocate for autism research and awareness. She is known as a ‘savant,’ or a person who shows characteristic social deficits of autism and yet also has some exceptional abilities. For instance, she has extremely sharp visual acuity.

This is the first study to take a close look at Grandin’s brain, and one of the first to look at the brains of savants.

Filed under Temple Grandin autism brain memory neuroscience psychology savants science visual acuity Neuroscience 2012

free counters