PMID: 9440358Jan 1, 1997Paper

Coping with systematic bias during bilateral movement

Psychological Research
C WalterH Y Pan

Abstract

The present studies examined the nature of kinematic interlimb interference during bilateral elbow movements of 1:1, 2:1 and 3:1 frequency ratios and the manner in which subjects cope with coordination bias. Analysis of movement trajectories in the first experiment indicated progressively greater angular velocity assimilation across 2:1 and 3:1 conditions. The desired temporal relationship was maintained by slowing or pausing the low-frequency movement at peak extension while the high-frequency arm produced intervening cycles. An increase in amplitude was also evident for concurrent, homologous cycles. Movement smoothness was emphasized and additional practice was provided in a second experiment. This resulted in dissociated peak angular velocity between limbs and eliminated hesitations and amplitude effects. Bias was still evident, however, as an intermittent approach toward a 1:1 ratio within each cycle. This systematic tendency was somewhat greater at the lower of two absolute frequency combinations but was not influenced by the role of each arm in producing the higher or lower frequency movement. The findings from the first experiment suggest that subjects initially accommodate interlimb kinematic assimilation, while produc...Continue Reading

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Citations

Jul 1, 2009·Experimental Brain Research·Deborah J Serrien
Feb 15, 2001·Journal of Motor Behavior·Dagmar SternadElliot L. Saltzman
Dec 29, 1998·Research Quarterly for Exercise and Sport·C Walter
Oct 2, 2009·Journal of Neurophysiology·Pratik K Mutha, Robert L Sainburg
Aug 23, 2011·PloS One·Helene M SistiStephan P Swinnen
Mar 5, 2002·The Quarterly Journal of Experimental Psychology. A, Human Experimental Psychology·A Semjen, J J Summers
Dec 3, 2014·Neuroscience and Biobehavioral Reviews·L M Rueda-DelgadoS P Swinnen

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