The Topology of Performance Curves during 72 Hours of Sleep Loss: A Memory and Search Task

Babkoff, Harvey; Mikulincer, Mario; Caspy, Tamir; Kempinski, Daniel; Sing, Helen C.

doi:10.1080/14640748808402296

Cited by 70 publications

(46 citation statements)

References 23 publications

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“…However, when data collection was continued into the night, it soon became apparent that overall performance on this short-term memory task in fact paralleled the body temperature cycle. These data are consistent with the results of a recent 72-h sleep deprivation study conducted by Babkoff et al (1988). Contrary to the earlier claims noted above, they found that performance on a Memory and Search task reached a trough between 02.00 hours and 06.00 hours using a 2-, 4-, or 6-letter target.…”

Section: Discussioncontrasting

confidence: 53%

Short‐term memory, alertness and performance: a reappraisal of their relationship to body temperature

Johnson

Duffy

Dijk

et al. 1992

Journal of Sleep Research

210

133

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SUMMARY Previous studies have led to the beliefs: (1) that short-term memory is best during the night when the body temperature is at its nadir, and (2) that the circadian rhythms of short-term memory and subjective alertness are driven by oscillators independent from each other and from the body temperature cycle. Unfortunately, these conclusions, which would have major implications for understanding the organization of the human circadian timing system, are largely based on field and laboratory studies, which in many cases sampled data infrequently and/or limited data collection to normal waking hours. In order to investigate these points further, we have monitored behavioural variables in two different protocols under controlled laboratory conditions: (1) during a period of 36-60 h of sustained wakefulness; and (2) during forced desynchrony between the body temperature and sleep/wake cycles, allowing testing of non-sleep-deprived subjects at all circadian phases. Contrary to earlier findings, we report here that the circadian rhythm of short-term memory varies in parallel with the circadian rhythms of subjective alertness, calculation performance, and core body temperature under both these experimental conditions. These results challenge the notion that short-term memory is inversely linked to the body temperature cycle and suggest that the human circadian pacemaker, which drives the body temperature cycle, is the primary determinant of endogenous circadian variations in subjective alertness and calculation performance as well as in the immediate recall of meaningful material.

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Section: Discussioncontrasting

confidence: 53%

Short‐term memory, alertness and performance: a reappraisal of their relationship to body temperature

Johnson

Duffy

Dijk

et al. 1992

Journal of Sleep Research

210

133

View full text Add to dashboard Cite

show abstract

“…the more usual sequence is for seven 12 h night shifts to be followed immeDownloaded by [Columbia University] at 21:11 05 February 2015 diately by seven 12 h day shifts. Thus, when changing shifts at the end of the first week, operators have little or no sleep over a 24 h period with potentially adverse effects on sleepiness, negative mood, and cognitive task performance (Babkoff et al 1988. Englund er al.…”

Section: Shift Duration and Shifi Rotation Patternsmentioning

confidence: 97%

Sleep patterns, shiftwork, and individual differences: a comparison of onshore and offshore control-room operators

Parkes

1994

Ergonomics

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The sleep patterns of offshore control-room operators were compared with those of personnel carrying out similar work onshore, taking into account individual differences in age, number of years of shiftwork, and neuroticism. The dependent variables were self-reported sleep quality and duration for day-shift (D-S) and night-shift (N-S) work, and during leave periods (L-P). Offshore workers reported longer N-S sleep duration, and lower D-S sleep quality than those onshore, but the two groups did not differ in L-P measures. The effects of environmental differences (onshore versus offshore) on sleep patterns were more marked than those of the two different shift systems (weekly rotation and fast rotation) in operation onshore. Age was negatively related to both duration and quality of sleep; over and above age, number of years of shiftwork was negatively related to sleep duration. Neuroticism was also negatively related to sleep duration and, more strongly, to sleep quality. These findings are discussed in relation to the literature on shiftwork and sleep in general, and the characteristics of the offshore environment in particular.

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“…However, the exact benefits of recovery sleep of various lengths are not fully known, and existing studies do not provide consistent results. Both Babkoff et al (1988) and Haslam (1982) reported that 4 h of sleep lead to partial recovery of performance after 73 and 90 h of TSD, respectively. On the other hand, Ryman et al (1985) reported that 3 h of sleep after only 17 h of continuous work did not improve performance.…”

Section: Introductionmentioning

confidence: 99%

Frontal Lobe Metabolic Decreases with Sleep Deprivation not Totally Reversed by Recovery Sleep

Gillin

Buchsbaum

et al. 2006

Neuropsychopharmacol

141

100

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We studied the effects of total sleep deprivation and recovery sleep in normal subjects using position emission tomography with 18F-deoxyglycose. Sleep deprivation resulted in a significant decrease in relative metabolism of the frontal cortex, thalamus, and striatum. Recovery sleep was found to have only a partial restorative effect on frontal lobe function with minimal reversal of subcortical deficits. Sleep may be especially important for maintenance of frontal lobe activity.

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The Topology of Performance Curves during 72 Hours of Sleep Loss: A Memory and Search Task

Cited by 70 publications

References 23 publications

Short‐term memory, alertness and performance: a reappraisal of their relationship to body temperature

Short‐term memory, alertness and performance: a reappraisal of their relationship to body temperature

Sleep patterns, shiftwork, and individual differences: a comparison of onshore and offshore control-room operators

Frontal Lobe Metabolic Decreases with Sleep Deprivation not Totally Reversed by Recovery Sleep

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