1988 Fiscal Year Final Research Report Summary
Influencing Factors upon Human Communication
| Project/Area Number |
61480363
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Otorhinolaryngology
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| Research Institution | Kinki University |
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Principal Investigator |
OHTA Fumihiko Kinki University School of medicine Professor, 医学部, 教授 (50088530)
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| Co-Investigator(Kenkyū-buntansha) |
KOHDA Yoshihiko Kinki University School of Medicine Assistant, 医学部, 助手 (50170189)
TAMAKI Katsuhiko Kinki University School of Medicine Assistant, 医学部, 助手 (70179878)
HOSOI Hiroshi Kinki University School of Medicine Lecturer, 医学部, 講師 (80094613)
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| Project Period (FY) |
1986 – 1988
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| Keywords | Communication disorder / Correlation between SRT and discrimination score / Speed of speech and its intelligibility / 失語疾患者のコミュニケーション能力 / 補聴器のフィッティング |
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| Research Abstract |
Speech reception threshold (SRT) and maximum discrimination score (MDS) are the only avalilble scale representing communication ability by speech sounds. The correlation between SRT and MDS in sensori-neural hearing losses was investigated. The discrimination score descended at the rate of 4.7% per 10dB as a function of SRT in the range of 0 to 48.3dB, and descended at 13.5%10dB in the range of 48.3 to 90dB of SRT. This means that when the hearing impairment progress over 48.3dB of SRT, man feel sudden fall of hearing ability.
It is well known that speech spoken slowly is more intelligible. Non sense sentences composed of a line of words without logical connection, were utilized for a test of intelligibility of sentence presented at slow speed as a function of MDS. At 100 syllables per minute, intelligibility score rose at the rate of 33.6% per 10% of MDS in the range under 23.2% of MDS. But discrimination of non sense sentences did not rise so high score in the range under 50%.
Several aphasic patients were tested by retarded speech. Two kinds of mode of retardation were used; in one way a space was inserted between each syllable, and in the other vowel portion of every syllable was prolonged twofold. In the aphasics, prolonged vowels were more effective to understand the speech.
One of the purposes of this study is to find a conclusive knowldge for fitting of hearing aid. Two characteristic cases were demostrated, and discussed whether a hearing aid was well fitted or not by means of the map of Japanese monosyllables which Hosoi et al. have published in 1986.
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