Perseveration in aphasia.
We developed a battery of tests to evaluate the relationship of perseveration to aphasia, and tested 44 subjects (18 with aphasia, 13 with right hemispheric lesions, 13 normal controls). Several major findings emerged: left hemispheric, posteriorly located, aphasia producing lesions also produced abundant perseverations, both verbal and non-verbal, which were primarily recurrent in type; right hemispheric lesions produced few perseverations, and these were primarily of the continuous type; more than half of the verbal recurrent perseverations of aphasia on a naming task were semantic in nature. We conclude that recurrent perseveration has a special, perhaps integral, link to language disorders of aphasia, particularly fluent aphasia associated with posterior lesions.
M L
ML
Albert
J
J
Sandson
D000849:Anomia / Q000175:diagnosis; D001037:Aphasia / Q000175:diagnosis*; D001039:Aphasia, Broca / Q000175:diagnosis; D001041:Aphasia, Wernicke / Q000175:diagnosis; D001925:Brain Damage, Chronic / Q000175:diagnosis; D004292:Dominance, Cerebral; D006801:Humans; D008875:Middle Aged; D009483:Neuropsychological Tests; D011597:Psychomotor Performance; D013239:Stereotyped Behavior; D014705:Verbal Behavior