When two limbs are weaker than one: sensorimotor syncopation with alternating hands

The Quarterly Journal of Experimental Psychology. A, Human Experimental Psychology
Peter E Keller, Bruno H Repp

Abstract

This study addresses the demands of alternating bimanual syncopation, a coordination mode in which the two hands move in alternation while tapping in antiphase with a metronomic tone sequence. Musically trained participants were required to engage in alternating bimanual syncopation and five other coordination modes: unimanual syncopation where taps are made (with the left or right hand) after every tone; unimanual syncopation where taps are made after every other tone; bimanual synchronization with alternating hands; unimanual synchronized tapping with every tone; and unimanual tapping with every other tone. Variability in tap timing was greatest overall for alternating bimanual syncopation, indicating that it is the most difficult. This appears to be due to instability arising from the simultaneous presence of two levels of antiphase coordination (one between the pacing sequence and the hands, the other between the two hands) rather than factors relating to movement frequency or dexterity limits of the nonpreferred hand.

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Citations

Dec 24, 2004·Psychological Research·Peter E Keller, Bruno H Repp
Aug 5, 2010·Psychological Research·Barbara TillmannPeter E Keller
Apr 18, 2006·Psychonomic Bulletin & Review·Bruno H Repp
Nov 27, 2014·Frontiers in Human Neuroscience·Birgitta BurgerPetri Toiviainen
Mar 27, 2007·Journal of Cognitive Neuroscience·Bettina PollokAlfons Schnitzler
Jul 18, 2017·Psychological Research·Birgitta BurgerPetri Toiviainen

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