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タイトル: 騒音曝露下のクレペリン加算作業における一考察 : 白色Noise 80 dB下での実験
その他のタイトル: An Analysis of the Performance by Kroeperin-Test under White Noise
著者: 大場, 義夫
丹, 公雄
著者(別言語): Ohba, Yoshio
Tan, Kimio
発行日: 1976年3月30日
出版者: 東京大学教育学部
掲載誌情報: 東京大学教育学部紀要. 15巻, 1976.3, p.273-277
抄録: With reference to studies concerning the psychological performance in nuisance noise levels, we hypothesized that the affect of noises was not merely inhibitory but also accelerating, designated them as "inhibitory effect" and "accelerating effect". The main purpose of this study was to investigate these two effects. Experimental conditions and procedures were as follows; Test: Kroeperin-test of 15-5-10 style, with intervals of five minutes, composed of mathematical computation. Noise conditions: Quiet-about 25 dB(A), Experimental-White noise 80 dB(A), produced by Noise Field Generator. Laboratory: Carefully controlled environment in a sound proof room with 5-7 members at one time. Grouping: 4 groups. HI: High efficiency in working quantity, obtained as a result of first working under experimental condition followed by work under quiet condition a week later. HII: High efficiency, obtained by working in reverse of HI. LI: Lower efficiency in working quantity, obtained by wurking in the same order as HI. LII: Lower efficiency, obtained by working in the same order as HII. Subjects: University students and post graduate students, 65 in total. We compared the working quantity of groups H and L between "experimental"and "quiet" conditions by averaging I and II. After the experiment, blood pressure and TTS2 were examined. The findings of the study were as follows; 1. Group L: Within the first 3-4 minutes, "accelerating effect" was disappeared and "inhibitory effect" lasted, especially strong for the last 10 minutes. Group H: For the first 15 minutes, "accelerating effect" was much stronger and for the last 10 minutes no change in either effects were observed. 2. A work amount curve by the minute was not different between "quiet" and "experimental" conditions. 3. Errors did not depend upon noise conditions but upon order. The first work had moreerrors than the second. 4. Pulse decreased under "experimental" condition. 5. TTS2 was not noticed under 1KHZ and 4KHZ.
URI: http://hdl.handle.net/2261/334
ISSN: 04957849


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