Oct 09
27
Brain Autism
DSM IV Autism Spectrum – Re-examining the brain and autism
Autism spectrum disorders or pervasive developmental disorder involving disturbances in reciprocal social interaction and restricted repetitive behavior in the absence of obvious intellectual dysfunction. Although the pathophysiology of autism individual will be put in place, has been widely accepted that the nervous high impact on the central function method. DSM IV Autism Spectrum
Among the units brain have also continued to be proposed to play a crucial role in the neurobiology of clinical characteristics of autism, the contribution of the amygdala is really convincing. This is the impaired autistic individuals to process emotional and social guidance that left various service institutions is to hypothesize an association of the amygdala and autism. Brain imaging studies show abnormalities in the amygdala in individuals affected.
Conversely, the results were the most non-specific neuropathological and brain volumetric studies have been mostly incompatible. More importantly, research to assess the involvement of the amygdala failed to report associations with autism-related behavioral and emotional disorders. Information on these correlations would specifically support by providing information on whether the amygdala dysfunction is relevant to the etiology of autism, that is if they are indeed accurate pathophysiological mediator of autism. DSM IV Autism
Functional neuroimaging involving people with autism show activation amydgala least when inferring mental states, the interpretation of emotional facial expressions or in response to changing labor demand in a mental task (Wang et al., 2004), compared to normal subjects. Currently, no effort was made to determine the relationship between the amygdala of the diagnostic features of autism spectrum disorders based on criteria defined in the Diagnostic and Statistical Manual of Mental Disorders Version IV (DSM-IV) and International Classification of Diseases version 10 (ICD-10).
Although autistic symptomatology include cognition disorders and social recognition emotions, which are representative of a group of diagnostic DSV-IV and ICD-10, they are not fundamental to the psychiatric diagnosis of autism. One study examined the direct relationship between amygdala function and autism in affected individuals (Dziobek et al., 2005). Patients with autism and normal controls were examined using brain imaging techniques from amygdala volume and behavioral factors of emotion and social functioning and results of both groups were then compared in order to better understand the association between these variables ".
The Results showed that patients with dysfunction of autism is manifested in emotional and social functioning compared to normal subjects. They also showed an unusual association between amygdala volume and overall size head. Positive associations were found between social understanding and emotional and amygdala volume in the affected individuals, but this was not the case in patients with autism. Autism Spectrum DSM IV
Interestingly, when the amygdala volume correlated with overall brain size for the groups separately, there was a strong tendency positive for normal individuals, whereas there was only a small negative association in patients with autism. volumetric analysis did not yield significant differences between groups. The results indicate that in autism, the amygdala is a key mediator for the operation Social and emotional development. Do not let your child suffer more! Lead your child's world through the Autism Spectrum DSM IV program now!
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Brain Imaging: Insights into the Pathogenesis of Autism
