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  • Title: Verbal and nonverbal right hemisphere processing by chronic alcoholics.
    Author: Cermak LS, Verfaellie M, Letourneau L, Blackford S, Weiss S, Numan B.
    Journal: Alcohol Clin Exp Res; 1989 Oct; 13(5):611-6. PubMed ID: 2688457.
    Abstract:
    The theory that chronic alcoholism produces a right hemisphere deficit has generally been tested using visuospatial tasks. The present report tested the theory using three tasks that tap functions, other than visuospatial abilities, which have been failed by patients with right hemisphere damage. The first task assesses the ability to draw a correct inference by integrating information from two unrelated sentences. The second taps the patient's capacity to appreciate humor. The third requires the patient to interpret the emotion displayed in a face. On all three tasks, the pattern of responses of chronic alcoholics differed from that of patients with right hemisphere damage. Thus, the right hemisphere deficit theory fails to gain support from this investigation. On the other hand, the chronic alcoholics' performance was impaired relative to contemporary controls on the first two tasks, although not on the last. On the first two tasks, alcoholics' impairment approximated, and in one instance exceeded, that seen in normal elderly controls. Thus, a premature aging hypothesis received modest support from this study.
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