Document Detail

Hand-held tools with complex kinematics are efficiently incorporated into movement planning and on line control.
MedLine Citation:
PMID:  22773780     Owner:  NLM     Status:  Publisher    
Certain hand-held tools alter the mapping between hand motion and motion of the tool endpoint 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 et al. 2011), or correct an ongoing reaching movement (Gritsenko and Kalaska 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 endpoint 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 endpoint motion. In the non-reversal 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 on-line control.
Lee A Baugh; Erica Hoe; John Randall Flanagan
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-5
Journal Detail:
Title:  Journal of neurophysiology     Volume:  -     ISSN:  1522-1598     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375404     Medline TA:  J Neurophysiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
1University of South Dakota.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Selective bilateral activation of leg muscles after cutaneous nerve stimulation during backward walk...
Next Document:  Decreased afferent excitability contributes to synaptic depression during high-frequency stimulation...