Correlations between subjective evaluation about own sleep and that of objective evaluation in psychophysiological insomnia
Article first published online: 10 JUN 2003
Sleep and Biological Rhythms
Volume 1, Issue 2, pages 139–140, June 2003
How to Cite
SATO, M., OHBUCHI, K., HAYASHIDA, K.-i., SHIN, M., OZONE, M., YAMADERA, W., ITOH, H., SASAKI, M. and USHIJIMA, S. (2003), Correlations between subjective evaluation about own sleep and that of objective evaluation in psychophysiological insomnia. Sleep and Biological Rhythms, 1: 139–140. doi: 10.1046/j.1446-9235.2003.00024.x
- Issue published online: 10 JUN 2003
- Article first published online: 10 JUN 2003
- Accepted for publication 29 November 2002.
- psychophysiological insomnia;
- subjective–objective dissociations
The dissociation and correlation between objective (actigraph) and subjective (sleep diary, sleep questionnaire) evaluation about one's own sleep in nine psychophysiological insomnia outpatients was investigated. We found that objective TST (total sleep time) and MT (nocturnal moving time) in actigraph correlated with subjective depth of sleep, number of awakening, physical and mood condition on waking, and total point of questionnaire, while objective sleep latency did not correlate with any subjective measurements. For longer TST and lesser MT, a better subjective sleep evaluation was induced. Subjective sleep latency did not correlate with objective sleep latency but it did with objective sleep onset time. Moreover, the number of subjective awakenings did not correlate with the number of objective awakenings, but with it did with objective TST and MT.