Contextual tuning of direction-selective retinal ganglion cells.
A direction-selective (DS) retinal ganglion cell responds well to a small object moving within its receptive field center, but less well when there is also a moving stimulus in the surrounding area; this has been described as tuning for local motion. We show here an additional selectivity, such that the surround has less effect if there is a discontinuity--that is, a difference in spatial phase, spatial frequency or velocity--between the center stimulus and that present in the surround.
Howard Hughes Medical Institute, Massachusetts General Hospital, Harvard Medical School, 50 Blossom Street, Wellman 429, Boston, Massachusetts 02114, USA.
Chuan-Chin
CC
Chiao
Richard H
RH
Masland
D000200:Action Potentials / Q000502:physiology*; D000818:Animals; D009039:Motion Perception / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011817:Rabbits; D011930:Reaction Time / Q000502:physiology; D012165:Retinal Ganglion Cells / Q000502:physiology*