Autistic male teens and young men with severe social impairment tend to have an abnormally small amygdala — the brain’s “fear center” — U.S. researchers report.The almond-shaped amygdala is located deep within the brain. Reporting in the December issue of theArchives of General Psychiatry, a team at the University of Wisconsin used MRI to examine the study participants’ brains, specifically the amygdala.
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