✦ LIBER ✦

TRANSIENT EFFECT OF THE NOISE OF PASSING TRUCKS ON SLEEP EEG

✍ Scribed by S. Suzuki; T. Kawada; Y. Kiryu; Y. Sasazawa; Y. Tamura

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 137 KB
Volume: 205
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1997.1006

No coin nor oath required. For personal study only.

✦ Synopsis

Twelve subjects were each exposed to the noise of passing trucks at peak levels of 45, 50, 55 and 60 dB(A) for 15 min intervals throughout the night each for seven to 12 nights. Effects of the noise were observed by sleep electroencephalograpy (EEG). Three EEG parameters were affected by the noise event during stage 2. The number of spindles per epoch was depressed on average from 1•78 to 1•02 spindles per epoch or to 57% by the noise event of 60 dB(A), which lasted for only one minute. The threshold level for inducing the decrease was 32 dB(A), as assessed by a regression equation. Time % delta wave was depressed for six minutes, with a threshold level of 41 dB(A). The integral EMG increased in response to the noise event for one minute, and the threshold level for the integral EMG was 34 dB(A).

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