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行政單位
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search.filters.author.曾馨儀
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search.filters.author.董貞吟
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search.filters.author.黃乾全
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search.filters.subject.Noise
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search.filters.subject.Temporary threshold shift
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search.filters.subject.噪音
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search.filters.subject.噪音性暫時性聽力損失
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Author: search.filters.author.曾馨儀
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噪音特性、年齡與暫時性聽力損失關係之實驗研究
(
健康促進與衛生與衛生教育學系
,
2003-12-??
)
董貞吟
;
黃乾全
;
曾馨儀
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本研究目的在探討不同噪音特性及年齡在不同噪音位準暴露下,所引起之暫時性聽力損失效應。研究採立意取樣選擇二個年齡層,分別為20、40(±5)歲之自 願者、無耳朵疾病史且無特殊噪音暴露經驗,並經檢查聽力正常者各為15及14人為研究對象,使其重複暴露在交通噪音及4k純音之85、90、 95Dbspl等不同位準噪音下30分鐘,於實驗前及暴露後2分鐘測其聽力(TTS2),並在95dB的交通噪音暴露後,測其不同時間(暴露2分、20 分、40分、60分)的聽力,以了解其暫特性聽力損失的恢復情形。此外,The Reed-Muench也被應用於噪音暴露ED50之計算。結果發現暴露音源為純音者較交通噪音更能預測TTS,且有較典型之劑量反應。TTS2恢復時以 以6KHz最慢,而ED50以40歲組純音暴露最低,在6KHz僅82.8dB。
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