Intermanual interactions related to movement amplitudes and endpoint locations

Journal of Motor Behavior
Herbert Heuer, Wolfhard Klein

Abstract

In almost all studies of bimanual movements with same and different amplitudes, the difference between amplitudes has been confounded with a difference between endpoint locations. The present authors varied those parameters orthogonally. In addition, they presented target locations on the surface on which the movements were produced (direct cues) and on a monitor (indirect cues). Participants' (N = 12) reaction times were longer when both amplitudes and endpoint locations differed than when they were the same. Intermanual amplitude correlations were reduced whenever 1 of the movement parameters differed for the 2 hands; only when cues were presented on the monitor was the amplitude correlation further reduced when both movement parameters were different. The results indicate that structural constraints on bimanual movements take effect on both amplitudes and endpoint locations. The relative importance of those 2 parameters is largely independent of the type of cue.

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Citations

Jul 2, 2008·Experimental Brain Research·Dana MaslovatIan M Franks
Jan 14, 2010·Experimental Brain Research·Attila J Kovacs, Charles H Shea
Nov 3, 2011·Experimental Brain Research·Charles H SheaAttila J Kovacs
Aug 19, 2015·Psychonomic Bulletin & Review·Charles H SheaDeanna M Kennedy
Jun 10, 2006·Experimental Brain Research·Herbert Heuer
May 23, 2014·Journal of Neurophysiology·Eric MooshagianLawrence H Snyder

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