Sleep duration, sleep variability, and impairments of visual attention

BARCLAY, Nicola, ROWLEY, Susan, ROBSON, Anna, AKRAM, Umair and MYACHYKOV, Andriy (2019). Sleep duration, sleep variability, and impairments of visual attention. Quarterly Journal of Experimental Psychology.

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Official URL: https://journals.sagepub.com/doi/full/10.1177/1747...
Link to published version:: https://doi.org/10.1177/1747021819895771
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    Abstract

    Attentional networks are sensitive to sleep deprivation. However, variation in attentional performance as a function of normal sleep parameters is under-studied. We examined whether attentional performance is influenced by 1) individual differences in sleep duration; 2) sleep duration variability; and/or 3) their interaction. Fifty-seven healthy participants (61.4% female; mean age=32.37 years; SD=8.68) completed questionnaires, wore wrist actigraphy for one week, and subsequently completed the Attention Network Test. Sleep duration and sleep duration variability did not predict orienting score, executive control score or error rates. Sleep duration variability appeared to moderate the association between sleep duration with overall reaction time (β = -.34, t= -2.13, p=.04) and alerting scores (β= .43, t=2.94, p=.01), though further inspection of the data suggested that these were spurious findings. Time of testing was a significant predictor of alerting score (β=.35, t=2.96, p=.01), chronotype of orienting (β=.31, t=2.28, p=.03) and age of overall reaction time (β=.35, t=2.70, p=.01). Our results highlight the importance of examining the associations between variations in sleep-wake patterns and attentional networks in samples with greater variation in sleep, as well as the importance of rigorously teasing apart mechanisms of the sleep homeostat from those related to the circadian rhythm in studies examining cognition.

    Item Type: Article
    Uncontrolled Keywords: 1701 Psychology; 1702 Cognitive Sciences; Experimental Psychology
    Identification Number: https://doi.org/10.1177/1747021819895771
    SWORD Depositor: Symplectic Elements
    Depositing User: Symplectic Elements
    Date Deposited: 25 Nov 2019 11:20
    Last Modified: 14 Jan 2020 12:16
    URI: http://shura.shu.ac.uk/id/eprint/25483

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