GalileoAce wrote:
As far as I know MRIs don't show many differences in the Autistic brain
I thought it was fairly well established from neuroimaging studies that the brains of autistic people are structurally different to those of neurotypical people. It's just that science's knowledge of autism hasn't yet reached the stage where someone could diagnose an autistic person from an image of their brain alone. For anyone who's interested (and I must admit I'm not particularly) there's all sorts of information on this on the net, e.g.,
Quote:
From
http://jon.sagepub.com/cgi/content/refs/14/1/8Autistic spectrum disorder (ASD) is a lifelong developmental disorder characterized by impairment in socialization and communication. Neuroimaging research has shown abnormalities in the frontal lobes, limbic systems, and cerebella of individuals with ASD. Recently, abnormal developmental trajectories of brain growth have been reported, with increases in brain volume (in both gray and white matter) seen in younger rather than older individuals with this disorder. Despite 30 years of research, a reliable marker for ASD has not been identified. Therefore, routine neuroimaging for individuals with ASD is not recommended.
Quote:
From
http://serendip.brynmawr.edu/bb/neuro/n ... verna.htmlDr. Joseph Piven from the University of Iowa noticed a size difference . In the autistic brain, the cerebellum is larger and the corpus callosum is smaller. Another study showed that the amygdala and the hippocampus are different in an autistic brain. In an autistic these structures have densely packed neurons and the neurons are smaller than those in a healthy brain. Also, in the cerebellum there is a noticeable reduction in the number of Purkinje cells.
GalileoAce wrote:
...And those they do show are more symptoms of Autism, not the cause.
What do you mean by this?