title: Portable devices for measuring performance in the field: the effects of sleep deprivation and night shift on the performance of computer operators.
mesh_terms: D000204:Activity Cycles; D002940:Circadian Rhythm; D003201:Computers; D004526:Efficiency; D006801:Humans; D008297:Male; D011930:Reaction Time; D012892:Sleep Deprivation; D013647:Task Performance and Analysis