Neurobiological Mechanisms of Social Anxiety Disorder

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Abstract
OBJECTIVE: The authors critically surveyed several preclinical and clinical neurobiological models of social anxiety disorder. METHOD: The authors reviewed the recent literature regarding three animal models of particular relevance to social anxiety. They then examined the recent literature concerning clinical neurobiological aspects of social anxiety disorder, including the developmental neurobiology of anxiety, the genetics of fear and social anxiety, and challenge and imaging studies. RESULTS: The available animal models are useful paradigms for understanding the features of social subordination stress, attachment behavior, and environmental rearing, but they incompletely account for the known neurobiology of human social anxiety disorder. The clinical neurobiology literature surveyed implicates specific neurotransmitter system abnormalities, most notably of the dopamine system, but largely ignores neurodevelopmental processes and the functional interactions between neurotransmitters. Both heritable fa...

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