Effects of force production and trial duration on bimanual performance and attentional demands in a rhythmic coordination task

Motor Control
Alexandre MurianJean Jacques Temprado

Abstract

The current study investigated the influence of resistance to motion and trial duration on the stability of bimanual coordination patterns and attentional demands. Seven participants performed in-phase and antiphase coordination patterns at a frequency of 1.5 Hz for 300 s. Resistance opposed to pronation-supination movements was manipulated. Attentional demands associated with the bimanual coordination patterns performance were measured using a probe reaction-time task. Results showed that variations in the level of resistance to motion, which induced corresponding variations in the amount of muscle activation during both the in-phase and the antiphase pattern, were associated with longer reaction time. Relative phase variability and attentional demands were higher for the antiphase pattern than for the in-phase pattern. Moreover, the attentional demands did not covary with the increase in the antiphase pattern over the trial duration. The inphase pattern remained unaffected by resistance opposed to pronation-supination movement. The present findings and the time effect are discussed according to potential alterations localized in different sites at the cortical level.

Citations

Jan 15, 2010·Journal of Neurophysiology·Natalia DounskaiaElizabeth Drummond
Apr 3, 2014·Experimental Brain Research·Yannick DaviauxThibault Deschamps
Dec 8, 2014·Psychological Research·Deanna M KennedyCharles H Shea

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