Accuracy and underlying mechanisms of shifting movements in cellists.

Experimental Brain Research
Jessie ChenSteven Pologe

Abstract

Accuracy of shifting movements between two notes was examined in nine cellists (intermediate-professional skill levels). Three pairs of notes separated by different distances were tested under the same movement rate. Finger position on the string was measured by a circuit. Angular velocities of the left upper arm and forearm were measured by two angular velocity sensors; thus elbow angular velocity during shifts was estimated. Results showed that with increased elbow velocity and shifting distance endpoint variability stayed constant. The force of gravity assisted elbow extension during shifts toward higher pitched notes compared to flexion towards lower pitched notes, but faster movement velocity did not result in increased landing variability. Performance for note E on the A string was found to be less variable than other notes, suggesting that physical cue from the cello body geometry was used as a landmark for finger position. Cutaneous feedback from the thumb when hitting the body-neck junction enabled faster elbow extension velocity compared to shifts towards other notes. Cellists who showed higher performance accuracy also showed higher perceptual ability and performance proficiency. These results suggest that long-term ...Continue Reading

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Citations

Apr 22, 2008·Experimental Brain Research·Jessie ChenGeorge P Moore
Mar 20, 2010·Psychological Research·Clemens Wöllner, Rouwen Cañal-Bruland
Jul 29, 2011·Topics in Spinal Cord Injury Rehabilitation·Seyed A SafavyniaLena H Ting
Jun 23, 2007·Nature Reviews. Neuroscience·Robert J ZatorreVirginia B Penhune

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