博言家の失語症について—神経心理学的考察

Neuropsychological study of two cases of aphasia in polyglots

I．まえがき

　博言家（多国語習得者）すなわち2か国語（bilingual）ないし，数か国語（polylingual）に堪能な人が失語症になった場合，どの国語がどのように侵され，どの国語がどのように回復するかという問題は神経心理学におけるきわめて興味ある課題である。

　われわれはbilingualの失語症2例を経験したので，報告し考察を加えたい。

Abstract

The authors studied aphasia in polyglots (in neuropsychology, bilinguals are often included in the term polyglot). The first case was born as a child of Japanese emigrants in the U.S.A. Until he was 12 years old, he learned English in pri-mary school in the U.S.A. and he had to come back to Japan, because of the traffic accident of his father. At the time he could speak, hear, write and read English easily but he was not able to do Japanese a little. In Japan he went to Japanese primary school and learned primary course of Japanese.