ISCA Archive ICSLP 1994
ISCA Archive ICSLP 1994

Cognitive processes of speech sounds in a brain-damaged patient

Sachiko Nakakoshi, Atsushi Mizobuchi, Hiroto Katori

The purpose of this study was to examine experimentally cognitive processes of serial speech sounds through a case having disturbances of speech sound perception after putamen hemorrhage. The patient was a right-handed and well-educated man in his forties. His scores on intelligence and language ability tests were very good, except for auditory comprehension tasks. His threshold of pure tones and perception of non-verbal auditory stimuli were normal. While his perception of single speech sounds was relatively good, perception of three to four syllable non-sense words was very poor. Specifically, correct responses steeply declined as the syllable position in the word presented moved toward the end. On the other hand, control subjects with peripheral hearing disorder did not show such tendency. It could be suggested, therefore, that the patient's type of deficits might underlie lowered speed of processing of speech sounds. To examine this hypothesis, syllable matching tasks with the different interval between syllables were performed. We found that the patient's scores at rear syllable positions improved only in the long presentation interval conditions. The results suggested that the main deficits in the patient might be a decreasing rate of processing of speech sounds.


Cite as: Nakakoshi, S., Mizobuchi, A., Katori, H. (1994) Cognitive processes of speech sounds in a brain-damaged patient. Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994), 1203-1206

@inproceedings{nakakoshi94_icslp,
  author={Sachiko Nakakoshi and Atsushi Mizobuchi and Hiroto Katori},
  title={{Cognitive processes of speech sounds in a brain-damaged patient}},
  year=1994,
  booktitle={Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994)},
  pages={1203--1206}
}