Document Detail

Goal-Directed Reaching: The SNARC Effect Influences Movement Planning but not Movement Execution.
MedLine Citation:
PMID:  21864464     Owner:  NLM     Status:  In-Data-Review    
The spatial-numerical association of response codes (SNARC effect) is a well-documented phenomenon wherein numerical digits spatially bias the selection of a response, with low and high numbers eliciting faster left and right responses, respectively. A host of button press tasks report expression of the SNARC effect for response planning (i.e., reaction time: RT); however, Fischer (2003) reports that the effect can selectively manifest during the movement execution phase (i.e., movement time: MT) of a goal-directed reaching task. Here we employed a kinematic technique to determine whether the reported SNARC effect is expressed in the early or late (or both) stages of a goal-directed reaching trajectory. Results for RT produced a reliable SNARC effect whereas results for MT produced a reversed-SNARC effect that was attributed to the deceleration phase of reach trajectories. More specifically, left space reaches cued by low numbers produced shorter RTs than high number counterparts and were associated with longer MTs (the converse was true of right space reaches). We have interpreted these results in terms of a spatial-numerical bias influencing a trade-off between the temporal properties of movement planning and execution mechanisms.
Taryn Bingley; Matthew Heath
Related Documents :
21777624 - Phenomenology and neural correlates of implicit and emergent motor awareness in patient...
21867734 - Early electrophysiological indicators for predictive processing in audition.
9715104 - Anterior electrophysiological asymmetries, emotion, and depression: conceptual and meth...
21775334 - Automatic imitation in a strategic context: players of rock-paper-scissors imitate oppo...
12505604 - The distribution of preferred orientations in the peripheral visual field.
8391824 - Mechanical deafferentation of basal forebrain-cortical pathways and neurotoxic lesions ...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Seeing and perceiving     Volume:  24     ISSN:  1878-4755     ISO Abbreviation:  Seeing Perceiving     Publication Date:  2011  
Date Detail:
Created Date:  2011-08-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101531524     Medline TA:  Seeing Perceiving     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  223-40     Citation Subset:  IM    
School of Kinesiology, The University of Western Ontario, London, Ontario, Canada N6A 3K7.
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:  Self-motion reproduction can be affected by associated auditory cues.
Next Document:  An investigation of the venetian blind effect.