Target selection during bimanual reaching to direct cues is unaffected by the perceptual similarity of the targets

Albert NB, Weigelt M, Hazeltine E, Ivry RB (2007)
Journal of Experimental Psychology: Human Perception and Performance 33(5): 1107-1116.

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Investigations of bimanual movements have shed considerable insight on the constraints underlying our ability to perform coordinated actions. One prominent limitation is evident when people are required to produce reaching movements in which the two trajectories are of different amplitudes and/or directions. This effect, however, is only obtained when the movements are cued symbolically (e.g., letters indicate target locations); these planning costs are absent when the target locations are directly cued (J. Diedrichsen, E. Hazeltine, S. Kennerley, & R. B. Ivry, 2001). The present experiments test whether the absence of planning costs under the latter condition is due to the perceptual similarity of the direct cues. The results demonstrate that measures of response planning and execution do not depend on the perceptual similarity of the direct cues. Limitations in our ability to perform distinct actions with the two hands appear to reflect interactions related to response selection involving the translation of symbolic cues into their associated movements rather than arise from interactions associated with perception, motor programming, and motor execution.
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Albert NB, Weigelt M, Hazeltine E, Ivry RB. Target selection during bimanual reaching to direct cues is unaffected by the perceptual similarity of the targets. Journal of Experimental Psychology: Human Perception and Performance. 2007;33(5):1107-1116.
Albert, N. B., Weigelt, M., Hazeltine, E., & Ivry, R. B. (2007). Target selection during bimanual reaching to direct cues is unaffected by the perceptual similarity of the targets. Journal of Experimental Psychology: Human Perception and Performance, 33(5), 1107-1116.
Albert, N. B., Weigelt, M., Hazeltine, E., and Ivry, R. B. (2007). Target selection during bimanual reaching to direct cues is unaffected by the perceptual similarity of the targets. Journal of Experimental Psychology: Human Perception and Performance 33, 1107-1116.
Albert, N.B., et al., 2007. Target selection during bimanual reaching to direct cues is unaffected by the perceptual similarity of the targets. Journal of Experimental Psychology: Human Perception and Performance, 33(5), p 1107-1116.
N.B. Albert, et al., “Target selection during bimanual reaching to direct cues is unaffected by the perceptual similarity of the targets”, Journal of Experimental Psychology: Human Perception and Performance, vol. 33, 2007, pp. 1107-1116.
Albert, N.B., Weigelt, M., Hazeltine, E., Ivry, R.B.: Target selection during bimanual reaching to direct cues is unaffected by the perceptual similarity of the targets. Journal of Experimental Psychology: Human Perception and Performance. 33, 1107-1116 (2007).
Albert, Neil B., Weigelt, Matthias, Hazeltine, Eliot, and Ivry, Richard B. “Target selection during bimanual reaching to direct cues is unaffected by the perceptual similarity of the targets”. Journal of Experimental Psychology: Human Perception and Performance 33.5 (2007): 1107-1116.
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PMID: 22562588

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