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The aim of the present study was to investigate whether synchronized activity between the right and left primary sensorimotor cortices has a functional role in the organization of bimanual in-phase and anti-phase movement patterns, performed at different cycling frequencies. To this end we evaluated the cortical dynamics by means of task-related EEG. Both behavioral performance and coupling between the primary sensorimotor cortices in the beta frequency band were reduced with increasing movement speed, and this effect was far more powerful in the anti-phase than in-phase mode. Thus, a progressive degradation of interhemispheric connectivity with cycling rate was associated with a deteriorating behavioral output. Overall, these results support a significant role for interhemispheric synchronization in the control of bimanual movements.

Original publication

DOI

10.1007/s00221-002-1253-z

Type

Journal article

Journal

Exp Brain Res

Publication Date

11/2002

Volume

147

Pages

268 - 272

Keywords

Adult, Cortical Synchronization, Electroencephalography, Functional Laterality, Humans, Motor Cortex, Movement, Psychomotor Performance, Somatosensory Cortex