TY - JOUR
T1 - Reach plans in eye-centered coordinates
AU - Batista, Aaron P.
AU - Buneo, Christopher A.
AU - Snyder, Lawrence H.
AU - Andersen, Richard A.
PY - 1999/7/9
Y1 - 1999/7/9
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0033538555&partnerID=8YFLogxK
U2 - 10.1126/science.285.5425.257
DO - 10.1126/science.285.5425.257
M3 - Article
C2 - 10398603
AN - SCOPUS:0033538555
SN - 0036-8075
VL - 285
SP - 257
EP - 260
JO - Science
JF - Science
IS - 5425
ER -