Slowed reaction times in cognitive fatigue are not attributable to declines in motor preparation

Peters, Kathleen J; Maslovat, Dana; Carlsen, Anthony N.

doi:10.1007/s00221-022-06444-1

Cited by 5 publications

(1 citation statement)

References 98 publications

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“…Further research could link changes in the oscillatory signal to this objective performance and the subjective experience of fatigue, and this would help to ground research on fatigue in clinically relevant theoretical conceptualisations [ 29 , 83 ] as well as help to better understand innate and lasting proclivity to fatigue. Another open avenue of research is the comparison of this attentional approach to other paradigms and tasks with higher cognitive demands [ 84 , 85 ] or using a task-switching approach [ 86 ].…”

Section: Discussionmentioning

confidence: 99%

Probing sustained attention and fatigue across the lifespan

Hanzal,

Learmonth,

Thut

et al. 2024

PLoS ONE

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Trait fatigues reflects tiredness that persists throughout a prolonged period, whereas state fatigue is a short-term reaction to intense or prolonged effort. We investigated the impact of sustained attention (using the SART) on both trait and state fatigue levels in the general population. An online version of the SART was undertaken by 115 participants, stratified across the whole adult lifespan. While pre-task trait fatigue was a strong indicator of the initial state fatigue levels, undergoing the task itself induced an increase in reported subjective state fatigue, and an accompanying reduction in subjective energy rating. Consistent with this finding, greater subjective state fatigue levels were associated with reduced accuracy. In addition, age was the best predictor of inter-participant accuracy (the older the participants, the greater the accuracy), and learning (i.e., task duration reducing reaction times). Moreover, a ceiling effect occurred where participants with higher trait fatigue did not experience greater state fatigue changes relative to those with low trait scores. In summary, we found improved accuracy in older adults, as well as a tight coupling between state fatigue and SART performance decline (in an online environment). The findings warrant further investigation into fatigue as a dynamic, task-dependent state and into SART performance as an objective measure and inducer of fatigue.

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Section: Discussionmentioning

confidence: 99%

Probing sustained attention and fatigue across the lifespan

Hanzal,

Learmonth,

Thut

et al. 2024

PLoS ONE

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Visual perceptual processing is unaffected by cognitive fatigue

Peters,

Maslovat,

Carlsen

2024

Consciousness and Cognition

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Chronic short sleep duration lengthens reaction time, but the deficit is not associated with motor preparation

Dutil,

De Pieri,

Sadler

et al. 2024

Journal of Sleep Research

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SummaryThe purpose of this study was to investigate the association between chronic sleep duration and reaction time performance and motor preparation during a simple reaction time task with a startling acoustic stimulus in adults. This cross‐sectional study included self‐reported short sleepers (n = 25, ≤ 6 hr per night) and adequate sleepers (n = 25, ≥ 7.5 hr per night) who performed a simple reaction time task requiring a targeted ballistic wrist extension in response to either a control‐tone (80 dB) or a startling acoustic stimulus (120 dB). Outcome measures included reaction times for each stimulus (overall and for each trial block), lapses, and proportion of startle responses. Chronic short sleepers slept on average 5.7 hr per night in the previous month, which was 2.8 hr per night less than the adequate sleepers. Results revealed an interaction between sleep duration group and stimulus type; the short sleepers had significantly slower control‐tone reaction times compared with adequate sleepers, but there was no significant difference in reaction time between groups for the startling acoustic stimulus. Further investigation showed that chronic short sleepers had significantly slower control‐tone reaction times after two blocks of trials lasting about 5 min, until the end of the task. Lapses were not significantly different between groups. Chronic short sleep duration was associated with poorer performance; however, these reaction time deficits cannot be attributed to motor preparation, as startling acoustic stimulus reaction times were not different between sleep duration groups. While time‐on‐task performance decrements were associated with chronic sleep duration, alertness was not. Sleeping less than the recommended sleep duration on a regular basis is associated with poorer cognitive performance, which becomes evident after 5 min.

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Slowed reaction times in cognitive fatigue are not attributable to declines in motor preparation

Cited by 5 publications

References 98 publications

Probing sustained attention and fatigue across the lifespan

Probing sustained attention and fatigue across the lifespan

Visual perceptual processing is unaffected by cognitive fatigue

Chronic short sleep duration lengthens reaction time, but the deficit is not associated with motor preparation

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