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- W2014736377 abstract "Eye-hand coordination is a central research topic in neuroscience and cognitive psychology. There has long been a debate on whether eye-hand coordination is limited by shared neural sensory signals that drive both the eye and hand sensorimotor systems, or by independent signals later in sensorimotor pathways. In this study, we addressed this question by examining the correlation between the tracking errors in the ocular and manual responses. Two experimental conditions were tested: in the eye-hand condition, as participants used pursuit eye movements to track the movement of a Gaussian target (σ=0.6°) on a computer display (40°H x 30°V) as its horizontal position was perturbed by the sum of seven harmonically-unrelated sinusoids (0.1-2.19 Hz), they also used a high-precision mouse to control the horizontal position of a second vertically-offset Gaussian cursor (8° below) to align it with the pursuit target. In the eye-alone condition, the target and cursor positions previously recorded in the eye-hand condition were played back, and participants were instructed to use only pursuit eye movements to track the movement of the target. Prior to computing the correlation between the tracking errors in the ocular and manual responses, for each 90-s trial, we subtracted best-fitting linear tracking responses at the seven input perturbation frequencies to remove direct correlation with the visual stimulus. Across 13 participants, trial-by-trial examination revealed that the correlation between the residual noises (i.e., tracking errors) in the ocular and manual responses in the eye-hand condition (mean r=0.20; range: 0.08-0.34) was highly significant (p<0.0001, Pearson’s R), and in all but seven out of 78 cases (13 subjects x 6 trials) higher than the spurious correlation in the eye-alone condition when ocular pursuit was not accompanied by simultaneous manual tracking. We conclude that common neural visual motion signals drive both the eye and hand sensorimotor systems. Meeting abstract presented at VSS 2013" @default.
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- W2014736377 date "2013-07-25" @default.
- W2014736377 modified "2023-10-01" @default.
- W2014736377 title "Shared neural sensory signals for eye-hand coordination in humans" @default.
- W2014736377 doi "https://doi.org/10.1167/13.9.1205" @default.
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