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Objective: The purpose of this study was to investigate regional structural abnormalities in the brains of five patients with refractory obsessive-compulsive disorder (OCD) submitted to gamma ventral capsulotomy. Methods: We acquired morphometric magnetic resonance imaging (MRI) data before and after 1 year of radiosurgery using a 1.5-T MRI scanner. Images were spatially normalized and segmented using...
Habituation is a highly adaptive property of the nervous system, which allows for the allocation of attention and other cognitive resources to more imperative environmental events. The amygdala is an important site of habituation in humans, but no studies to date have examined the effects of aging on amygdala habituation. Given the amygdala's role in evaluating the salience of a stimulus and initiating...
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