OBJECTIVE: This study examined the effects of posture on electroencephalographic (EEG) activity and psychomotor vigilance task (PVT) performance in 16 sleep-deprived volunteers. METHODS: EEG data were collected while participants completed 10 min PVTs under two counterbalanced sitting/standing conditions during 28 h of continuous wakefulness. RESULTS: In both the sitting and standing conditions, theta activity progressively increased as a function of sleep loss, but standing upright significantly attenuated this effect, suggesting that alertness was improved by the more upright posture. The PVT results showed that cognitive psychomotor performance was maintained at nearly well-rested levels by standing upright, whereas reaction time and attention noticeably deteriorated when participants were seated. CONCLUSIONS: These results suggest that an upright posture increases EEG arousal and sustained attention, indicating that postural manipulations can be useful for counteracting fatigue in sleep-deprived individuals.
OBJECTIVE: This study examined the effects of posture on electroencephalographic (EEG) activity and psychomotor vigilance task (PVT) performance in 16 sleep-deprived volunteers. METHODS: EEG data were collected while participants completed 10 min PVTs under two counterbalanced sitting/standing conditions during 28 h of continuous wakefulness. RESULTS: In both the sitting and standing conditions, theta activity progressively increased as a function of sleep loss, but standing upright significantly attenuated this effect, suggesting that alertness was improved by the more upright posture. The PVT results showed that cognitive psychomotor performance was maintained at nearly well-rested levels by standing upright, whereas reaction time and attention noticeably deteriorated when participants were seated. CONCLUSIONS: These results suggest that an upright posture increases EEG arousal and sustained attention, indicating that postural manipulations can be useful for counteracting fatigue in sleep-deprived individuals.
Authors: Kerstin Hoedlmoser; Hermann Griessenberger; Robert Fellinger; Roman Freunberger; Wolfgang Klimesch; Walter Gruber; Manuel Schabus Journal: J Sleep Res Date: 2010-10-26 Impact factor: 3.981
Authors: Bruce Luber; Jason Steffener; Adrienne Tucker; Christian Habeck; Angel V Peterchev; Zhi-De Deng; Robert C Basner; Yaakov Stern; Sarah H Lisanby Journal: Sleep Date: 2013-06-01 Impact factor: 5.849
Authors: Nico Romeijn; Roy J E M Raymann; Els Møst; Bart Te Lindert; Wisse P Van Der Meijden; Rolf Fronczek; German Gomez-Herrero; Eus J W Van Someren Journal: Pflugers Arch Date: 2011-11-03 Impact factor: 3.657