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The Journal of Neuroscience, February 15, 2003, 23(4):1432
Sleep-Related Consolidation of a Visuomotor Skill: Brain Mechanisms as Assessed by Functional Magnetic Resonance Imaging
Pierre Maquet1, 4, Sophie Schwartz2, Richard Passingham1, 3, and Christopher Frith1 1 Wellcome Department of Imaging Neuroscience, London WC 1N 3BG, United Kingdom, 2 Institute of Cognitive Neuroscience, University College London, London WC 1N 3AR, United Kingdom, 3 Department of Experimental Psychology, University of Oxford, Oxford OX1 3UD, United Kingdom, and 4 Cyclotron Research Centre, University of Liège, 4000 Liège, Belgium
Subjects were trained on a pursuit task in which the target trajectory was predictable only on the horizontal axis. Half of them were sleep deprived on the first post-training night (n = 13). Three days later, functional magnetic resonance imaging revealed task-related increases in brain responses to the learned trajectory, as compared with a new trajectory. In the sleeping group (n = 12) as compared with the sleep-deprived group, subjects' performance was improved, and their brain activity was greater in the superior temporal sulcus (STS). Increased functional connectivity was observed between the STS and the cerebellum and between the supplementary eye field and the frontal eye field. These differences indicate sleep-related plastic changes during motor skill learning in areas involved in smooth pursuit eye movements.
Key words: functional neuroimaging; functional magnetic resonance imaging; statistical parametric mapping; functional connectivity; procedural memory; memory consolidation; sleep; sleep deprivation; smooth pursuit eye movements
Copyright © 2003 Society for Neuroscience 0270-6474/03/2341432-09$05.00/0
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