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Keeping time in your sleep: overnight consolidation of temporal rhythm

Lewis, Penelope A., Couch, Tom J. and Walker, Matthew P. 2010. Keeping time in your sleep: overnight consolidation of temporal rhythm. Neuropsychologia 49 (1) , pp. 115-123. 10.1016/j.neuropsychologia.2010.10.025

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Abstract

Temporal processing forms the basis of a vast number of human behaviours, from simple perception and action to tasks like locomotion, playing a musical instrument, and understanding language. Growing evidence suggests that these procedural skills are consolidated during sleep, however investigation of such learning has focused upon the order in which movements are made rather than their temporal dynamics. Here, we use psychophysics and neuroimaging to explore the possibility that temporal aspects of such skills are also enhanced over a period of sleep. Behaviourally, our examinations of motor (tapping a finger in time with a temporal rhythm) and perceptual (monitoring a temporal rhythm for deviants) tasks reveal post-sleep improvements in both domains. Functionally, we show that brain-state during retention (sleep or wake) modulates subsequent responses in the striatum, supplementary motor area, and lateral cerebellum during motor timing, and in the posterior hippocampus during perceptual timing. Our data support the proposal that these two forms of timing draw on different brain mechanisms, with motor timing using a more automatic system while perceptual timing of the same rhythm is more closely associated with cognitive processing.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Uncontrolled Keywords: Sleep; Memory; Time perception; Striatum; Hippocampus
Publisher: Elsevier
ISSN: 0028-3932
Date of Acceptance: 19 October 2010
Last Modified: 04 Jun 2017 08:52
URI: http://orca.cf.ac.uk/id/eprint/86688

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