日本航海学会論文集
Online ISSN : 2187-3275
Print ISSN : 0388-7405
船員のワークロードに関する研究-II : 操船者の心拍変動よりみた自律神経機能の変化
加藤 和彦重田 茂夫小林 敏生村山 義夫小林 弘明遠藤 真阪口 泰宏市原 信
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1997 年 96 巻 p. 167-173

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The purpose of this study is to investigate the mehtod of estimating navigators' work-load by the autonomic nervous activities which are given by the spectral analysis on the changes of heart beat interval (R-R interval). Experimental ships manoeuvring tasks in the simulator, which were on fairway with other vessels, were performed by four subjects that were 3 captains and a chief officer. We recorded a R-R interval during the tasks and analyzed the changes of the records every for 5 minutes by means of Coarse-graining spectral analysis (CGSA method). We accumulated power spectrum of three frequency bands; Lo=0〜0.15Hz, Hi=0.15〜0.8Hz, total=0Hz〜, Lo/Hi and Hi/Total were calculated to evaluate sympathetic (SNS) and parasympathetic (PNS) nervous activities. The SNS activities increased and the PNS activities decreased when there were vessels which were crossing or nearing. On the contrary, when those vessels didn't exist, the SNS activities decreased and the PNS activities increased. We calculated the average number of other vessels that crossed or closed to their vessel every for 5 minutes to evaluate the marine traffic environment. It was not recognized that the correlation between the average and heart rate. However, there was the positive correlation between the average and the SNS. These results suggest that the method of estimating by autonomic nervous activity by CGSA on heart beat interval changes is a useful to evaluate navigators' work-load.

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© 1997 公益社団法人日本航海学会
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