APFIVE Neurobiology of Obsessive-Compulsive Disorder
A client reports intrusive thoughts about contamination that cause significant distress, leading to repetitive hand-washing that consumes several hours daily. Which neurobiological mechanism best explains the persistence of these symptoms?
A
Reduced connectivity in the default mode network
B
Dysfunction in cortico-striatal-thalamic circuits
C
Excessive dopamine in the nucleus accumbens
D
Hyperactivity in the parasympathetic nervous system
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