発話において語頭モーラの脱落を認めた非流暢型失語の１例

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  • A Patient with Non-fluent Type Aphasia Marked by Omission of the Initial Mora of Words.

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We report on a 52-year-old male aphasic patient who exhibits omission of the initial mora of a word spoken in isolation. The omission occurs in confrontation naming, reading aloud of Kanji and Kana words, and repetition of words and nonwords. The mechanism of this phenomenon seemed to be common in all modalities of spoken output. The patient showed apraxia of speech (AOS) . Generally AOS is manifested by omission of the initial consonant of a word, but not the initial mora. When the patient omitted an initial mora, we were unable to observe any articulatory movements. The phenomenon did not appear to be related to semantic factors, because the omission occurs in both word and nonword repetitions. He could identify the number of moras of target words, though he omitted the initial mora of a word. He made a small number of errors with initial consonants of residual words for which he omitted the initial mora. These findings suggest that the patient somehow recognizes the existence of the initial mora of words.

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