Experimental Brain Research

, Volume 147, Issue 2, pp 268–272

The functional role of interhemispheric synchronization in the control of bimanual timing tasks

Authors

  • Deborah J. Serrien
    • Sobell Department of Motor Neuroscience and Movement Disorders (Box 146), Institute of Neurology, Queen Square, London WC1N 3BG, UK
  • Peter Brown
    • Sobell Department of Motor Neuroscience and Movement Disorders (Box 146), Institute of Neurology, Queen Square, London WC1N 3BG, UK
Research Note

DOI: 10.1007/s00221-002-1253-z

Cite this article as:
Serrien, D.J. & Brown, P. Exp Brain Res (2002) 147: 268. doi:10.1007/s00221-002-1253-z

Abstract.

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.

EEG Task-related coherence Functional coupling

Copyright information

© Springer-Verlag 2002