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ID: 17028.0, MPI für biophysikalische Chemie / Membranbiophysik (Prof. Erwin Neher)
Orientation sensitivity of ganglion cells in primate retina
Authors:Passaglia, C. L.; Troy, J. B.; Ruettiger, L.; Lee, B. B.
Language:English
Date of Publication (YYYY-MM-DD):2002-03
Title of Journal:Vision Research
Volume:42
Issue / Number:6
Start Page:683
End Page:694
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The two-dimensional shape of the receptive field center of macaque retinal ganglion cells was determined by measuring responses to drifting sinusoidal gratings of different spatial frequency and orientation. The responses of most cells to high spatial frequencies depended on grating orientation, indicating that their centers were not circularly symmetric. In general, center shape was well described by an ellipse. The major axis of the ellipse tended to point towards the fovea or perpendicular to this. Parvocellular pathway cells had greater center ellipticity than magnocellular pathway cells; the median ratio of the major-to-minor axis was 1.72 and 1.38, respectively. Parvocellular pathway cells also had centers that were often bimodal in shape, suggesting that they received patchy cone/bipolar cell input. We conclude that most ganglion cells in primate retina have elongated receptive field centers and thus show orientation sensitivity. (C) 2002 Elsevier Science Ltd. All rights reserved.
Free Keywords:macaque monkeys; MC- and PC-pathway cells; receptive field; orientation tuning
Comment of the Author/Creator:Date: 2002, MAR
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für biophysikalische Chemie/Abt. Erwin Neher / 140
External Affiliations:Northwestern Univ, Inst Neurosci, Evanston, IL 60208 USA; Univ Tubingen, Hearing Res Ctr, D-72076 Tubingen, Germany; SUNY Coll Optometry, New York, NY 10036 USA
Identifiers:URL:http://www.sciencedirect.com/science?_ob=MImg&_ima...
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