Effects of integrated feedback on discrete bimanual movements in choice reaction time.
The ability to coordinate the simultaneous movements of our arms is limited by a coalition of constraints. Some of these constraints can be overcome when the task conceptualisation is improved. The present study investigated how the movement preparation of bimanual reaching movements was affected by integrated visual feedback of the responses. Previous research has shown that the preparation of bimanual asymmetric movements takes longer than bimanual symmetric movements. The goal of the present study was to determine whether integrated, Lissajous feedback could eliminate this bimanual asymmetric cost. Fifteen participants made unimanual and bimanual symmetric and asymmetric reaches with separate feedback, where there was a cursor and a target for each hand. Participants also made bimanual symmetric and asymmetric movements with integrated feedback; a single cursor and a single target represented the locations and goals of both arms in this condition. The results showed a bimanual asymmetric cost with separate feedback, and that this cost persisted with integrated feedback. We suggest that integrated feedback improved continuous and discrete bimanual movements in other experiments by facilitating error detection and correction processes. We hypothesise that the bimanual asymmetric cost persisted in the present experiment because the uncertainty associated with choice reaction time prevented the facilitated error processing from improving the preparation of the next trial.
School of Kinesiology, University of British Columbia, 210-6081 University Blvd, Vancouver, BC, V6T 1Z1, Canada. jarrod.blinch@gmail.com.|Department of Kinesiology and Physical Education, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada. jarrod.blinch@gmail.com.|Department of Kinesiology and Sport Management, Texas Tech University, Box 43011, Lubbock, TX, 79409-3011, USA. jarrod.blinch@gmail.com.
Jarrod
0000-0003-4016-2832
J
Blinch
School of Kinesiology, University of British Columbia, 210-6081 University Blvd, Vancouver, BC, V6T 1Z1, Canada.|Physical Education College, University of Campinas, Av. Erico Verissimo, 701, Campinas, SP, 13083-851, Brazil.
Guilherme
G
de Cellio Martins
School of Kinesiology, University of British Columbia, 210-6081 University Blvd, Vancouver, BC, V6T 1Z1, Canada.
Romeo
R
Chua
D000328:Adult; D000704:Analysis of Variance; D002755:Choice Behavior / Q000502:physiology*; D005246:Feedback; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*; D013997:Time Factors; D055815:Young Adult
Bimanual symmetric and asymmetric reaches; Lissajous feedback; Movement preparation cost; Task representation
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