Profiles of brain functional asymmetry in patients with alcoholism and drug addiction |
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| Authors: | A Yu Egorov T V Tikhomirov |
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| Institution: | (1) St. Petersburg State University, St. Petersburg, Russia;(2) Raul Wallenberg Institute of Special Pedagogy and Psychology of the International University of Family and Child, St. Petersburg, Russia;(3) Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia |
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| Abstract: | Profiles of motor, sensory, and cognitive asymmetries in patients with drug addiction and alcoholism and in people of relevant control group were studied. To reveal the profiles of interhemispheric asymmetry, a set of tests for determination of lateralization of motor (the dominant hand and leg), sensory (eye and ear) and cognitive (right- and left-hemispheric mode of solution of verbal and/or spatial tasks) was used. In patients with drug addiction and alcoholism as compared with the control group, a statistically significant domination of the left-sided lateralization of motor and sensory indexes was found. The right-hemispheric mode was essentially prevailing in solving the verbal and spatial tasks. No differences in motor asymmetry were observed in narcotic addicts and alcoholics. The dominant left eye and ear were statistically significantly more frequent in patients with alcoholism than in patients with drug addiction. The right-hemispheric mode in solution of cognitive tasks was used more often statistically significantly by narcotic addicts than by alcoholics. The obtained data indicate an essential impairment of profiles of the motor, sensory, and cognitive asymmetries in patients with the chemical addiction.Translated from Zhurnal Evolyutsionnoi Biokhimii i Fiziologii, Vol. 40, No. 5, 2004, pp. 450–454.Original Russian Text Copyright © 2004 by Egorov, Tikhomirov.To the 100-Anniversary of N. N. Traugott |
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