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Tytuł:
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Hand-held tools with complex kinematics are efficiently incorporated into movement planning and online control.
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Autorzy:
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Baugh LA; Centre for Neuroscience Studies, Queen’s University, Kingston, Ontario, Canada. />Hoe E
Flanagan JR
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Źródło:
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Journal of neurophysiology [J Neurophysiol] 2012 Oct; Vol. 108 (7), pp. 1954-64. Date of Electronic Publication: 2012 Jul 05.
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Typ publikacji:
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Journal Article; Research Support, Non-U.S. Gov't
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Język:
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English
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Imprint Name(s):
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Publication: Bethesda Md : American Physiological Society
Original Publication: Washington [etc.]
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MeSH Terms:
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Movement/*physiology
Psychomotor Performance/*physiology
Biomechanical Phenomena ; Female ; Hand/physiology ; Humans ; Male ; Motor Activity ; Young Adult
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Grant Information:
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Canada Canadian Institutes of Health Research
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Entry Date(s):
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Date Created: 20120710 Date Completed: 20130614 Latest Revision: 20131121
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Update Code:
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20240104
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DOI:
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10.1152/jn.00157.2012
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PMID:
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22773780
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Certain hand-held tools alter the mapping between hand motion and motion of the tool end point that must be controlled in order to perform a task. For example, when using a pool cue, the motion of the cue tip is reversed relative to the hand. Previous studies have shown that the time required to initiate a reaching movement (Fernandez-Ruiz J, Wong W, Armstrong IT, Flanagan JR. Behav Brain Res 219: 8-14, 2011), or correct an ongoing reaching movement (Gritsenko V, Kalaska JF. J Neurophysiol 104: 3084-3104, 2010), is prolonged when the mapping between hand motion and motion of a cursor controlled by the hand is reversed. Here we show that these time costs can be significantly reduced when the reversal is instantiated by a virtual hand-held tool. Participants grasped the near end of a virtual tool, consisting of a rod connecting two circles, and moved the end point to displayed targets. In the reversal condition, the rod translated through, and rotated about, a pivot point such that there was a left-right reversal between hand and end point motion. In the nonreversal control, the tool translated with the hand. As expected, when only the two circles were presented, movement initiation and correction times were much longer in the reversal condition. However, when full vision of the tool was provided, the reaction time cost was almost eliminated. These results indicate that tools with complex kinematics can be efficiently incorporated into sensorimotor control mechanisms used in movement planning and online control.