Coffee in the cornflakes: time-of-day as a modulator of executive response control.

Full Abstract

Previous self-report based research has revealed a heightened propensity to slips-of-action in the early morning and at the end of the day. Here, we examined performance variability among healthy young adults as a function of time-of-day on a clinical task that is sensitive to absent-minded slips in brain-injured groups. We found significantly higher error rates at 1 pm and 7 pm compared with 1 am and 7 pm, and significant correlations between errors and two subjective sleepiness scales. No circadian modulation of the more routine aspects of the task was observed suggesting some specificity to the effect. Given evidence that the circadian cycle differentially affects different brain regions, and links between sleep deprivation and 'normal' dysexecutive behaviour, examining variation over the course of the day can prove a useful additional methodology in this area

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Author information

Author/s: Manly, Tom (T); Lewis, Geraint H (GH); Robertson, Ian H (IH); Watson, Peter C (PC); Datta, Avijit K (AK);

Affiliation: MRC Cognition and Brain Sciences Unit, 15 Chaucer Road, CB2 2EF, Cambridge, UK. tom.manly(-atsign-)mrc-cbu.cam.ac.uk

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: Neuropsychologia (Neuropsychologia), published in England. (Language: eng)

Reference: 2002-; vol 40 (issue 1) : pp 1-6

Dates: Created 2001/10/11; Completed 2001/12/20; Revised 2006/11/15;

PMID: 11595257, status: MEDLINE (last retrieval date: 12/26/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adolescent
Adult
Attention - physiology
Circadian Rhythm - physiology
Female
Humans
Male

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