Consistent with studies in adult patients, increased error-related brain activity is evident in pediatric patients with OCD. Furthermore, increased error-related brain activity does not appear to change as a function of symptom reduction after therapy. These results suggest that an increased error-related negativity may be a trait-like marker for psychopathology and might be a useful endophenotype.
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Hajcak et al. (2007) studied this question.
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