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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 Chua School of Human Kinetics University of British Columbia. motorbehaviour.wordpress.com. Research question.

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Bimanual reaches with symbolic cues exhibit errors in target selection

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  1. 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

  2. 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? Do bimanual reaches with more cognitive visuomotor control processes compared to more automatic control exhibit greater coupling?

  3. Kelso, Putnam, & Goodman, 1979 Kelso, Southard, & Goodman, 1983

  4. Symbolic cues Spatial cues Asymmetric movement Symmetric movement L S L L Diedrichsen, Hazeltine, Kennerley, & Ivry, 2001

  5. 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

  6. Research question Do bimanual reaches with more cognitive visuomotor control processes compared to more automatic control exhibit greater spatial coupling?

  7. Method • 16 participants • Spatial and symbolic cues • Optotrak L S

  8. Symbolic, long-short, no modulations Symbolic, short-long, modulations

  9. 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

  10. Spatial coupling Franz, Zelaznik, Swinnen, & Walter, 2001 Swinnen, Lee, Verschueren, Serrien, & Bogaerds, 1997

  11. 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

  12. Movement time

  13. Spatial

  14. Symbolic

  15. Delta reaction time (ms)

  16. Online response selection

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