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Abstract:
Obsessive-compulsive disorder (OCD) is a common
neuropsychiatric condition, affecting approximately 2 percent of
the general population (Jenike et al. 1998). It is characterized by
bothersome intrusive thoughts and urges that frequently lead to
dysfunctional repetitive behaviors such as excessive hand washing
or ritualistic counting and checking. As the result of a concerted
research effort over the past two decades there has emerged a
growing consensus that brain circuitry contained within the orbital
frontal cortex, anterior cingulate gyrus and the basal ganglia is
intimately involved in the expression of the symptoms of OCD (for
recent reviews see Schwartz 1997a and b, Jenike et al. 1998).
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