アミタールテストによる言語優位側と利き手の関係

概要

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The relation of hand preference to cerebral speech representation, as determined by the Sodium Amobarbital Procedure, was investigated in 200 patients with partial epilepsy. Speech representation was found in left, right, and both hemispheres in 164 (90%), 9 (5%), and 9 (5%) of 182 dextral patients, and in 6 (40%), 6 (40%), and 3 (20%) of 15 non-dextral patients, respectively. Three non-dextral patients showed no speech representation on either side. Sex and the existence of non-dextral relatives did not affect the relationship between hand preference and speech representation. In 33 patients with surgically treated temporal lobe epilepsy with left-sided focus suffering from brain damage before the age of 2, we found a significantly higher rate of left/bilateral speech representation. In some of these patients, bimodal interhemispheric reorganization was suggested. In 11 of 12 patients with bilateral speech representation, a side of greater representation could be determined. Eight patients with left-sided speech dominance were dextral and 3 with right-sided speech dominance were non-dextral.
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