| Modulation of gamma and theta spectral amplitude and phase synchronization is associated with the development of visuo-motor learning. | |
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MedLine Citation:
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PMID: 21994398 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The formation of new motor memories, which is fundamental for efficient performance during adaptation to a visuo-motor rotation, occurs when accurate planning is achieved mostly with feedforward mechanisms. The dynamics of brain activity underlying the switch from feedback to feedforward control is still matter of debate. Based on the results of studies in declarative learning, it is likely that phase synchronization of low and high frequencies as well as their temporal modulation in power amplitude underlie the formation of new motor memories during visuo-motor adaptation. High-density EEG (256 electrodes) was recorded in 17 normal human subjects during adaptation to a visuo-motor rotation of 60° in four incremental steps of 15°. We found that initial learning is associated with enhancement of gamma power in a right parietal region during movement execution as well as gamma/theta phase coherence during movement planning. Late stages of learning are instead accompanied by an increase of theta power over that same right parietal region during movement planning, which is correlated with the degree of learning and retention. Altogether, these results suggest that the formation of new motor memories and, thus, the switch from feedback to feedforward control is associated with the modulation of gamma and theta spectral activities, with respect to their amplitude and phase, during movement planning and execution. Specifically, we propose that gamma/theta phase coupling plays a pivotal role in the integration of a new representation into motor memories. |
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Authors:
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Bernardo Perfetti; Clara Moisello; Eric Carl Landsness; Svetlana Kvint; Simona Lanzafame; Marco Onofrj; Alessandro Di Rocco; Giulio Tononi; M Felice Ghilardi |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of neuroscience : the official journal of the Society for Neuroscience Volume: 31 ISSN: 1529-2401 ISO Abbreviation: J. Neurosci. Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-10-13 Completed Date: 2011-12-06 Revised Date: 2012-04-18 |
Medline Journal Info:
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Nlm Unique ID: 8102140 Medline TA: J Neurosci Country: United States |
Other Details:
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Languages: eng Pagination: 14810-9 Citation Subset: IM |
Affiliation:
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Department of Physiology and Pharmacology, City University of New York Medical School, New York, New York 10031, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological Biomechanics Brain Mapping* Brain Waves / physiology* Cortical Synchronization / physiology* Electroencephalography Female Functional Laterality Humans Learning / physiology* Male Movement* Photic Stimulation Psychomotor Performance / physiology* Reaction Time / physiology Wavelet Analysis Young Adult |
| Grant Support | |
ID/Acronym/Agency:
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NS-054864/NS/NINDS NIH HHS; P20 MH077967-03/MH/NIMH NIH HHS; P20 MH077967-04/MH/NIMH NIH HHS; P20 MH077967-040002/MH/NIMH NIH HHS; R01 NS054864-01A1/NS/NINDS NIH HHS; R01 NS054864-02/NS/NINDS NIH HHS; R01 NS054864-03/NS/NINDS NIH HHS; R01 NS054864-04/NS/NINDS NIH HHS; R01 NS054864-05/NS/NINDS NIH HHS; R01 NS055185-05/NS/NINDS NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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