Abstract
The aim was to investigate how neuroticism moderates the affective consequences of personalized mild-moderate partial sleep deprivation. A total of 52 healthy subjects aged 18–35 years completed the NEO PI-3 at baseline, before they completed an 11-day study protocol. After maintaining habitual sleep for seven days, the participants were asked to sleep 2 h less than their average sleep duration, the last three nights of the study protocol. Sleep patterns were observed using actigraphs and sleep diaries. The participants completed the PANAS questionnaire measuring positive and negative affect at 9 am (±90 min) at day 1, 4, 8 (habitual sleep), 9 and 11 (partial sleep deprived). We found that participants with higher scores on neuroticism experienced a decrease in negative affect following sleep deprivation. Participants with lower scores on neuroticism experienced an increase in negative affect after sleep deprivation. Positive affect was reduced following sleep deprivation, regardless of scores on neuroticism.
Highlights
Sufficient sleep is crucial for brain health, cardiovascular health and prospective of a long life (Fernandez-Mendoza et al, 2020)
Higher scores on neuroticism was positively correlated with more negative affect (0.48), higher insomnia scores (0.50), higher score on Pittsburgh Sleep Quality index (0.32) and higher fatigue scores (0.50)
We found that healthy young adults with high neuroticism scores experienced decreased negative affect following three days of mild-moderate sleep deprivation
Summary
Sufficient sleep is crucial for brain health, cardiovascular health and prospective of a long life (Fernandez-Mendoza et al, 2020). Many adults report not getting enough sleep and often going to bed later than intended (Kroese et al, 2014; Nauts et al, 2019). Prior studies in healthy participants show that partial sleep deprivation reduces positive affect, but seem to have no influence on negative affect There seem to be biological based indi vidual differences in habitual sleep length (Aeschbach et al, 2003). We need to take an individualistic approach to examining the ef fect of sleep deprivation on affect, considering individual differences in personality as well as habitual sleep timing and sleep duration
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