Document Detail


Reach adaptation to online target error.
MedLine Citation:
PMID:  21267554     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Magescas et al. (Exp Brain Res 193:337-350, 2009) recently suggested that online error, unlike terminal error, does not lead to reach adaptation. The present study re-examines adaptation to online target error, but uses a small target perturbation and eliminates online vision of the limb, factors that may affect adaptation. We compared 3 groups: terminal error, online error, and control. All groups completed a pretest, exposure, and posttest phase. Participants made look-and-point movements to a target, and we examined how repeated rightward target perturbations during the exposure phases of the experimental groups influenced reaches to a stationary target in the posttest. Exposure phases of each group contained an equal number of interleaved look-and-point and look-only trials, the latter of which were designed to inhibit build-up of saccadic adaptation in the online error group. On look-and-point trials the target either disappeared at saccade onset and then re-appeared 3.75 cm to the right when the hand landed (terminal error group), immediately jumped right by 3.75 cm at saccade onset and remained lit throughout the saccade and reach (online error group), or remained lit but stationary throughout the saccade and reach (control group). In all groups, vision of the limb was only provided at the start and end of the reach. Our results show that both the terminal error and the online error groups developed significant aftereffects. It appears, therefore, that online error can produce reach adaptation.
Authors:
Brendan D Cameron; Ian M Franks; J Timothy Inglis; Romeo Chua
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-01-26
Journal Detail:
Title:  Experimental brain research     Volume:  209     ISSN:  1432-1106     ISO Abbreviation:  Exp Brain Res     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-02-21     Completed Date:  2011-07-05     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  171-80     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological / physiology*
Adult
Female
Fixation, Ocular / physiology
Humans
Male
Movement / physiology
Photic Stimulation
Psychomotor Performance / physiology*
Saccades / physiology*

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


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