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Centre and surround influences on the proximal negative response of the pigeon retina
Author(s) -
Brooks Barbara,
Holden A. L.
Publication year - 1974
Publication title -
the journal of physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.802
H-Index - 240
eISSN - 1469-7793
pISSN - 0022-3751
DOI - 10.1113/jphysiol.1974.sp010553
Subject(s) - retina , ophthalmology , neuroscience , psychology , optometry , medicine , biology
1. Extracellular field potentials were recorded with micro‐electrodes in the inner plexiform layer of the pigeon retina. Stimulus patterns were projected on a tangent screen. 2. Maximal responses to a 1° spot were produced from a receptive area 2–3° in extent. Annuli centred over this area produced a different response wave form. 3. The responses to centred spots and annuli presented synchronously do not superpose: they interact in a way suggesting transient mutual antagonism. The response to spot onset and offset can be suppressed either by annulus onset or by annulus offset. 4. A steady annulus has little effect on the response to spot stimuli, but a steady centred spot enhances the response to annular stimulation. 5. The results suggest that the PNR results from convergence of on‐centre and off‐centre pathways, which are embedded in a widespread suppressive surround.