PMID: 2487635Jan 1, 1989Paper

Orientation and direction tuning of goldfish ganglion cells

Visual Neuroscience
J Bilotta, I Abramov

Abstract

Orientation and direction tuning were examined in goldfish ganglion cells by drifting sinusoidal gratings across the receptive field of the cell. Each ganglion cell was first classified as X-, Y-, or W-like based on its responses to a contrast-reversal grating positioned at various spatial phases of the cell's receptive field. Sinusoidal gratings were drifted at different orientations and directions across the receptive field of the cell; spatial frequency and contrast of the grating were also varied. It was found that some X-like cells responded similarly to all orientations and directions, indicating that these cells had circular and symmetrical fields. Other X-like cells showed a preference for certain orientations at high spatial frequencies suggesting that these cells possess an elliptical center mechanism (since only the center mechanism is sensitive to high spatial frequencies). In virtually all cases, X-like cells were not directionally tuned. All but one Y-like cell displayed orientation tuning but, as with X-like cells, orientation tuning appeared only at high spatial frequencies. A substantial portion of these Y-like cells also showed a direction preference. This preference was dependent on spatial frequency but in a...Continue Reading

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Citations

Oct 1, 2003·The Journal of General Physiology·Kaj DjupsundMasahiro Yamada
Aug 30, 2013·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Andrew S LoweMartin P Meyer
Sep 10, 2005·Brain Research·Carlos Mora-FerrerKarin Jürgens
May 5, 2009·Journal of Integrative Neuroscience·Ilija DamjanovićVadim Maximov
Sep 8, 2007·Visual Neuroscience·Martin Gehres, Christa Neumeyer
Sep 8, 2007·Visual Neuroscience·Katja Wyzisk, Christa Neumeyer

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