Search results
Results from the WOW.Com Content Network
The amygdala, cerebellum, and many other brain regions have been implicated in autism. [15]Unlike some brain disorders which have clear molecular hallmarks that can be observed in every affected individual, such as Alzheimer's disease or Parkinson's disease, autism does not have a unifying mechanism at the molecular, cellular, or systems level.
Iryna Spodarenko / GettyWe’ve come a long way in our understanding of autism since it was first used as a clinical description in 1943. Scientists have identified some of the genes that seem to ...
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 ...
A further example of brain structures relating to ASD is that children with ASD tend to have a larger amygdala, [47] this is another example of being an extreme version of the male brain which generally has a larger amygdala. [4] These brain differences have all been shown to have an influence on social cognition and communication.
Brain studies have shown several amygdaloid impairments among those with ASD. The amygdala in those with nonspeaking autism have less volume compared to controls, contain a higher density of neurons suggesting hyperconnection, and show a negative correlation between amygdala size and impairment severity among subjects. [11]
The uncinate fasciculus is a white matter association tract in the human brain that connects parts of the limbic system such as the temporal pole, anterior parahippocampus, and amygdala in the temporal lobe with inferior portions of the frontal lobe such as the orbitofrontal cortex.
Likewise, children with autism have been shown to develop object recognition at a similarly impaired pace as face recognition. [22] Studies of late patients of autism have discovered that autistic people have lower neuron densities in the FFA. [23]
The amygdala is one of the best-understood brain regions with regard to differences between the sexes. The amygdala is larger in males than females, in children aged 7 to 11, [19] adult humans, [20] and adult rats. [21] There is considerable growth within the first few years of structural development in both male and female amygdalae. [22]