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Autistic individuals tend to use different brain areas (yellow) for a movement task compared to a control group (blue). [30] The underconnectivity theory of autism posits that autistic people tend to have fewer high-level neural connections and less global synchronization, along with an excess of low-level processes. [31]
The physical underpinnings of the cause for differences in the memory of autistic people has been studied. Bachevalier suggests a major dysfunction in the brain of an autistic individual resides in the neural mechanisms of the structures in the medial temporal lobe (MTL) and perhaps, more specifically the amygdaloid complex. [46]
Different underlying brain dysfunctions have been hypothesized to result in the common symptoms of autism, just as completely different brain types result in intellectual disability. [1] [5] In recent years, the prevalence and number of people diagnosed with the disorder have increased dramatically. There are many potential reasons for this ...
Vitamin B12: The researchers found that, overall, B12 levels in the brain tissue of autistic children were three times lower than those of the brain tissue of children not affected by ASD. This lower-than-normal B12 profile persisted throughout life in the brain tissues of patients with autism. These deficiencies are not visible by conventional ...
Autism spectrum disorder [a] (ASD), or simply autism, is a neurodevelopmental disorder "characterized by persistent deficits in social communication and social interaction across multiple contexts" and "restricted, repetitive patterns of behavior, interests, or activities". [11] Sensory abnormalities are also included in the diagnostic manuals ...
The following chapters investigate the biological background of autism and how historically it was claimed to be either the result of direct brain damage or poor parenting and how the practice of diagnostic classification, or nosology, negatively impacted the understanding of children with autism and others on the spectrum.
They've used genetic engineering to breed over a dozen macaque monkeys with a flawed gene that triggers a rare form of autism in humans. The hope is that researchers can not only study how brains ...
A young boy with autism who has arranged his toys in a row. Several researchers have suggested a clinical link between difficulties in neural binding and autism spectrum disorders. [32] It has been postulated that there is a level of underconnectivity between certain areas of the autistic brain, specifically those areas that involve social ...