Bimanual reaches with symbolic cues exhibit errors in target selection
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Bimanual reaches with symbolic cues exhibit errors in target selection Jarrod Blinch, Brendan Cameron, Ian Franks, Romeo Chua School of Human Kinetics University of British Columbia motorbehaviour.wordpre ss.com
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Bimanual reaches with symbolic cues exhibit errors in target selection. Jarrod Blinch, Brendan Cameron, Ian Franks, Romeo Chua School of Human Kinetics University of British Columbia. motorbehaviour.wordpress.com. Research question. - PowerPoint PPT Presentation
Transcript of Bimanual reaches with symbolic cues exhibit errors in target selection
Bimanual reaches with symbolic cues exhibit errors in target selection
Jarrod Blinch, Brendan Cameron, Ian Franks, Romeo ChuaSchool of Human Kinetics
University of British Columbia
motorbehaviour.wordpress.com
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Do bimanual reaches with more cognitive visuomotor control processes compared to more automatic control exhibit greater coupling?
Research question
Do bimanual reaches with more cognitive visuomotor control processes compared to more automatic control exhibit greater coupling?
Do bimanual reaches with more cognitive visuomotor control processes compared to more automatic control exhibit greater coupling?
Do bimanual reaches with more cognitive visuomotor control processes compared to more automatic control exhibit greater coupling?
Do bimanual reaches with more cognitive visuomotor control processes compared to more automatic control exhibit greater coupling?
3Kelso, Putnam, & Goodman, 1979
Kelso, Southard, & Goodman, 1983
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L S L L
Diedrichsen, Hazeltine, Kennerley, & Ivry, 2001
Symbolic cues Spatial cuesAsymmetric movement Symmetric movement
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Reaction time cost with symbolic cues
• Coupling during movement preparation
• Increased processing demands on response selection– Translate two different
symbolic cues– Assign a movement to
each arm
Diedrichsen, Grafton, Albert, Hazeltine, & Ivry, 2006
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Research question
Do bimanual reaches with more cognitive visuomotor control processes compared to more automatic control exhibit greater spatial coupling?
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Method
• 16 participants• Spatial and symbolic cues• Optotrak L S
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Symbolic, long-short,no modulations
Symbolic, short-long,modulations
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Discussion
• Increased cognitive processing for response selection with symbolically-cued asymmetric movements– Coupling was also related to response selection• Reaction time cost• Errors in target selection
• Coupling is limited to the processes that require greater cognitive control
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Spatial coupling
Franz, Zelaznik, Swinnen,& Walter, 2001
Swinnen, Lee, Verschueren,Serrien, & Bogaerds, 1997
Bimanual reaches with symbolic cues exhibit errors in target selection
Jarrod Blinch, Brendan Cameron, Ian Franks, Romeo ChuaSchool of Human Kinetics
University of British Columbia
motorbehaviour.wordpress.com
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Movement time
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Spatial
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Symbolic
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Delta reaction time (ms)
Symbolic, no modulations
Symbolic, modulations
Long-Short -10.2 -0.4
Short-Long 0.6 -9.4
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Online response selection
