title: Varieties of perseveration.
abstract: We propose a new taxonomy for perseveration consisting of three categories which are distinctive at the levels of clinical features, process, and neuroanatomy. Stuck-in-set perseveration, the inappropriate maintenance of a current category or framework, involves an underlying process deficit in executive functioning and is related neuroanatomically to frontal lobe damage. Recurrent perseveration, the unintentional repetition of a previous response to a subsequent stimulus, involves an abnormal post-facilitation of memory traces and is related neuroanatomically to posterior left hemisphere damage. Continuous perseveration is the inappropriate prolongation or repetition of a behavior without interruption. It involves a deficit in motor output and is most common in patients with damage to the basal ganglia.
mesh_terms: D000368:Aged; D001037:Aphasia / Q000503:physiopathology; D001288:Attention / Q000502:physiology; D001925:Brain Damage, Chronic / Q000503:physiopathology*; D002544:Cerebral Infarction / Q000503:physiopathology; D003704:Dementia / Q000503:physiopathology; D004292:Dominance, Cerebral / Q000502:physiology; D005625:Frontal Lobe / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D010300:Parkinson Disease / Q000503:physiopathology; D011597:Psychomotor Performance / Q000502:physiology; D013239:Stereotyped Behavior / Q000502:physiology*; D014705:Verbal Behavior / Q000502:physiology