Please use this identifier to cite or link to this item:
Title: Spectral changes of interhemispheric crosstalk during movement instabilities
Authors: Houweling, S
Beek, PJ
Daffertshofer, A
Keywords: Beta modulation;Interhemispheric inhibition;MEG;Motor cortex;Motor timing
Issue Date: 2010
Publisher: Oxford University Press
Citation: Cerebral Cortex, 20(11), 2605 - 2613, 2010
Abstract: Bimanual coordination requires the functional integration of the activity in various cortical, subcortical, spinal, and peripheral neural structures. We challenged this functional integration by destabilizing bimanual 5:8 tapping through an increase in movement tempo, while measuring brain and muscle activity using magnetoencephalography and electromyography. Movement instabilities were characterized by a drop in frequency locking. Time–frequency analysis revealed movement-related beta amplitude modulation in bilateral motor areas as well as movement-related corticospinal entrainment. Both of these synchronization patterns depended on movement tempo suggesting that the timescale needed for the upregulation and downregulation of beta synchrony in rhythmic tapping poses constraints on motor performance. Bilateral phase locking over movement cycles appeared to be mediated by beta-frequency oscillations and constrained by its phase dynamics. The timescale of beta synchrony thus seems to play a key role in achieving timed phase synchrony in the motor cortex and along the neural axis. Once event-related desynchronization–synchronization cycles cannot be build up properly, inhibition may become inadequate, resulting in a reduction of the stability of performance, which may eventually become unstable.
Description: This article is available open access through the publisher’s website at the link below. Copyright @ The Author 2010.
ISSN: 1460-2199
Appears in Collections:Sport
Dept of Life Sciences Research Papers

Files in This Item:
File Description SizeFormat 
Notice.pdf38.49 kBAdobe PDFView/Open

Items in BURA are protected by copyright, with all rights reserved, unless otherwise indicated.