The process of improvement in conduction aphasia. Change in speech error in the course of recovery.

DOI 3 Citations 24 References

Bibliographic Information

Other Title
  • 伝導失語の改善過程　　発話における誤りの経時的変化を中心に

Search this article

Abstract

    This study investigated the process of recovery in conduction aphasia and discussed the underlying mechanism of disorders in conduction aphasia from two standpoints. One is change in phonetic speech error ; the other is change in performance on the auditory verbal short-term memory (STM) test in the course of recovery. The subjects were two male conduction aphasia patients, ages 45and 55. Both were diagnosed with conduction aphasia after the onset of a cerebral infarction which manifested a severe phonological disorder in spite of a well-preserved semantic system. We prepared two kinds of test. One consisted of confrontation naming, repetition, reading aloud of kanji words and reading aloud of kana words using the same 20 materials (speech analysis test). The other was an auditory verbal short-term memory span test (STM test) using numbers and words which represented the names of vegetables, in which the subjects were asked to respond by repetition and pointing. We administered the two tests several times, to one subject over 14 months and to the other over eight months after onset of aphasia.<br>    The results were as follows. (1) In the speech test, with improvement in performance, unsupposed responses, omissions and additions in errors decreased, and partially correct responses, displacements and transpositions increased, in both subjects in all four subtests. (2) In the STM test, performance in repetition, which was worse than performance in pointing at first, improved gradually. These results suggest that phonological disorders in conduction aphasia patients recover in two stages : the first in which they are unable to retrieve even individual phonemes and the second in which they have difficulty in choice and disposition of phonemes. Also, the fact that phonological disorders and declines in performance on STM tests were discovered in parallel suggests that phonological disorders in conduction aphasia cause short-term memory disorders.

Journal

  • Higher Brain Function Research

    Higher Brain Function Research 18 (3), 215-224, 1998

    Japanese Society of Aphasiology (Renamed as Japan Society for Higher Brain Dysfunction)

Citations (3)*help

See more

References(24)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top