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The relationship between subjective and objective sleepiness and performance during a simulated night-shift with a nap countermeasure
How Felt and Measured Sleepiness Relate to Performance During a Simulated Night Shift with a Nap
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Abstract
A 30-minute night-nap may reduce the correlation between perceived and actual sleepiness during night shifts.
- Subjective sleepiness was measured using several scales, showing variability in its relationship with objective sleepiness and performance.
- Objective measures of sleepiness included sleep latency tests, while performance was assessed through tasks like the Symbol-Digit Substitution Task.
- In both conditions (with and without a night-nap), subjective sleepiness was strongly correlated with reaction time performance.
- No significant difference in performance was observed between the night-nap and no-nap conditions.
- The findings suggest that perceived and actual sleepiness may not always align, and this discrepancy could be lessened by a short nap.
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