The course of recovery was characterized by improved comprehension of oral and written language and less severe agraphia. As in Thomsen´s (1975) study of diffuse CHI patients, amnestic aphasia and perseveration persisted in nearly all patients. Global aphasia with gross impairment of all language functions typically evolved into receptive aphasia, whereas patients who initially had a receptive aphasia frequently evidenced improvement in comprehension despite residual anomia.