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sleep deprivation psychomotor vigilance task workload

Namni Goel, Takashi Abe, Marcia E Braun, David F Dinges
STUDY OBJECTIVES: Determine the effects of high versus moderate workload on sleep physiology and neurobehavioral measures, during sleep restriction (SR) and no sleep restriction (NSR) conditions. DESIGN: Ten-night experiment involving cognitive workload and SR manipulations. SETTING: Controlled laboratory environment. PARTICIPANTS: Sixty-three healthy adults (mean ± standard deviation: 33.2 ± 8.7 y; 29 females), age 22-50 y...
November 1, 2014: Sleep
Philippa H Gander, Hannah M Mulrine, Margo J van den Berg, A Alexander T Smith, T Leigh Signal, Lora J Wu, Gregory Belenky
INTRODUCTION: Flight timing is expected to influence pilot fatigue because it determines the part of the circadian body clock cycle that is traversed during a flight. However the effects of flight timing are not well-characterized because field studies typically focus on specific flights with a limited range of departure times and have small sample sizes. The present project combined data from four studies, including 13 long-range and ultra-long range out-and-back trips across a range of departure and arrival times (237 pilots in 4-person crews, 730 flight segments, 1-3 d layovers)...
August 2014: Aviation, Space, and Environmental Medicine
Anu Holm, Kristian Lukander, Jussi Korpela, Mikael Sallinen, Kiti M I Müller
Modern work requires cognitively demanding multitasking and the need for sustained vigilance, which may result in work-related stress and may increase the possibility of human error. Objective methods for estimating cognitive overload and mental fatigue of the brain on-line, during work performance, are needed. We present a two-channel electroencephalography (EEG)-based index, theta Fz/alpha Pz ratio, potentially implementable into a compact wearable device. The index reacts to both acute external and cumulative internal load...
July 14, 2009: TheScientificWorldJournal
J S Samkoff, C H Jacques
Possible effects of sleep deprivation and fatigue on the performance and well-being of residents have received little scientific examination until recently. This article is a review of the studies on this topic published since 1970. All those studies that dealt with residents' moods and attitudes demonstrated deleterious effects of sleep deprivation and fatigue. The implications of this finding for patient care deserve exploration. Residents' acuity on performance tests requiring prolonged vigilance tended to deteriorate with acute sleep loss, while their performances on most brief psychomotor tests measuring manual dexterity, reaction times, and short-term recall were not adversely affected...
November 1991: Academic Medicine: Journal of the Association of American Medical Colleges
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