著者

高津 浩彰 小関 修

出版者

独立行政法人 国立高等専門学校機構豊田工業高等専門学校

雑誌

豊田工業高等専門学校研究紀要 (ISSN:02862603)

巻号頁・発行日

vol.39, pp.149-152, 2006-11-24 (Released:2017-04-27)

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This study is to asses concentration using Heart Rate Variability during taking class in college students. Students with concentration stayed RRI. But non-concentration students elevated RRI. Condition effected to concentration during taking class. So students should control condition before classes.

著者

高津 浩彰 宗像 光男 小関 修 横山 清子 渡辺 與作 高田 和之

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.120, no.1, pp.104-110, 2000 (Released:2008-12-19)

参考文献数

12

被引用文献数

5 7

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We evaluated the quantitative relationship between the subjective stress value and heart rate variability. The mean values of R-R interval (RRI) and respiratory sinus arrhythmia (RSA), which were reported to be markedly affected by stress, were used as heart rate variability. The following mental workload was performed so as to give wide range loads to the subjects: presentation of research, asking questions in research presentation, research presentation practice, and supine rest. The subjective stress value was obtained as serial values from 1 to 5 by a newly-developed questionnaire. The correlation between the stress value and RRI or RSA when such wide range workload are given was evaluated. There was a high correlation between the subjective stress value and RRI (correlation coefficient, -0.637), but not between the subjective stress value and RSA (coefficient, -0.319) Signal processing of RRI was simpler than that of RSA. These results suggest the usefulness of RRI as an index of the subjective stress value.

著者

長谷川 朗 小関 修 阪口 富弥

出版者

社団法人 日本写真学会

雑誌

日本写真学会誌 (ISSN:03695662)

巻号頁・発行日

vol.49, no.6, pp.509-512, 1986-12-28 (Released:2011-08-11)

参考文献数

4

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Microwave photoconductivity of silver halide emulsions reduces contrary in the course of rising at the leading edge of light pulse. The reduction occurred after a constant exposure of about 41μJ/cm2 regardless of the light intensity. The formation of latent image specks is considered to cause the reduction.

著者

堀 政重 小関 修 横山 清子 渡辺 與作

出版者

電気学会

雑誌

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)

巻号頁・発行日

vol.119, no.6, pp.668-675, 1999-06