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Reach Plans in Eye-Centered Coordinates

Batista, Aaron P. and Buneo, Christopher A. and Snyder, Lawrence H. and Andersen, Richard A. (1999) Reach Plans in Eye-Centered Coordinates. Science, 285 (5425). pp. 257-260. ISSN 0036-8075. doi:10.1126/science.285.5425.257.

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The neural events associated with visually guided reaching begin with an image on the retina and end with impulses to the muscles. In between, a reaching plan is formed. This plan could be in the coordinates of the arm, specifying the direction and amplitude of the movement, or it could be in the coordinates of the eye because visual information is initially gathered in this reference frame. In a reach-planning area of the posterior parietal cortex, neural activity was found to be more consistent with an eye-centered than an arm-centered coding of reach targets. Coding of arm movements in an eye-centered reference frame is advantageous because obstacles that affect planning as well as errors in reaching are registered in this reference frame. Also, eye movements are planned in eye coordinates, and the use of similar coordinates for reaching may facilitate hand-eye coordination.

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Andersen, Richard A.0000-0002-7947-0472
Additional Information:© 1999 American Association for the Advancement of Science. Received 29 June 1998; accepted 25 May 1999. Supported by the Sloan Center for Theoretical Neurobiology and the National Eye Institute. We thank Yale Cohen, Alexander Grunewald, and Philip Sabes for helpful discussions. We also thank Betty Gillikin and Viktor Shcherbatyuk for technical assistance, Janet Baer and Janna Wynne for veterinary care, and Cierina Reyes for administrative assistance.
Funding AgencyGrant Number
Sloan Center for Theoretical NeurobiologyUNSPECIFIED
National Eye InstituteUNSPECIFIED
Issue or Number:5425
Record Number:CaltechAUTHORS:20141124-081206705
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52081
Deposited By: Tony Diaz
Deposited On:24 Nov 2014 21:37
Last Modified:10 Nov 2021 19:20

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