A Case of Conduction Aphasia with Grammatical Problems

Abstract

    We report a case of conduction aphasia with grammatical problems, following infarction of the left cerebral hemisphere. The case, MK, is a 59-year-old right-handed man.
    In order to investigate MK's grammatical problems, we analyzed his spontaneous speech. The results were as follows. 1 ) MK appears to retain the ability to produce long and complex sentences, and has no problems of word-order. 2 ) particles are substituted, and attempts are made to correct all errors. 3 ) The length of predicates is short and there is a tendency to omit auxiliaries. Errors involving predicates can be categorized as phonological substitution in verbal stems, phonological substitution in functional words and substitution within functional words. Attempts are made to correct all errors.
    These results indicate the subject's ability to structure a sentence is preserved, while his ability to produce particles and predicates is disturbed.