トラック通過音による睡眠段階の即時的変動

概要

論文の詳細を見る
The instantaneous effect of the sound of a passing truck on sleep of five male students, 23 to 25 years of age, was assessed. The peak levels of noise were adjusted to 55, 60, and 65dB (A) with intervals of 18 and 13 minutes, and a frequency of one per hour. Background noise in the experimental room was Leq 42dB (A). The sleep stage of each epoch was visually judged based on the criteria of Rechtschaffen & Kales. Data for pre-exposure epochs of sleep stage 2 and rapid eye movement (REM) were collected and 18 epochs, including two under noise exposure, were evaluated. Three sets of polygraphic data were sampled as controls from 10 minutes after 65dB (A) exposure to the next exposure.Compared with the control, the percentage of stage 2 to shallower stages (stage 1, waking, or movement time (MT)) was significantly increased by exposure to 55, 60, and 65dB (A). The change lasted for one minute with exposure to 55dB (A), and 2 to 3 minutes with 60 and 65dB (A). A decrease in the percentage of stage 2 to deeper stages was observed at 2 to 4 minutes after exposure to 60 and 65dB (A). The percentage of stage 2 to MT increased at 60 and 65dB (A). The percentage of stage REM to other stages increased with the exposure to 60 or 65dB (A) within 4 minutes.The threshold of instantaneous change of stage 2 to shallower stages due to the sound of a passing truck was at the peak level at less than 55dB (A), and that of stage REM to other stages at 55 to 60dB (A).
日本衛生学会の論文

トラック通過音による睡眠段階の即時的変動

スポンサーリンク

概要

著者

関連論文

スポンサーリンク