Nature Neuroscience6, 1251 - 1252 (2003)
Published online: 2 November 2003; | doi:10.1038/nn1147
Contextual tuning of direction-selective retinal ganglion cells
Chuan-Chin Chiao1, 2
& Richard H Masland1
1
Howard Hughes Medical Institute, Massachusetts General Hospital, Harvard Medical School, 50 Blossom Street, Wellman 429, Boston, Massachusetts 02114, USA.
2
Department of Life Science, National Tsing Hua University, Hsinchu, 300, Taiwan.
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.
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