<prompt> Brain areas involved with obsessive compulsive disorder include all except:corpus callosumOrbitofrontal coexBasal gangliaHead of caudate nucleus  <response>: Neuroanatomical Structures Involved in OCD Orbitofrontal Coex Caudate which is a pa of Basal Ganglia Thalamus Extra edge: Other impoant Brain areas and associated psychiatric disorders : Psychiatric Disorders Brain Areas involved 1. Anxiety disorders Locus ceruleus Raphe nucleus Caudate nucleus Temporal coex Frontal coex 2. Depression Damage to the left frontal lobe 3. Alzheimers disease Hippocampus 