Receptive-field properties of Q retinal ganglion cells of the cat

John B Troy*, D. E. Schweitzer-Tong, Ch Enroth-Cugell

*Corresponding author for this work

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

The goal of this work was to provide a detailed quantitative description of the receptive-field properties of one of the types of rarely encountered retinal ganglion cells of cat; the cell named the Q-cell by Enroth-Cugell et al. (1983). Quantitative comparisons are made between the discharge statistics and between the spatial receptive properties of Q-cells and the most common of cat retinal ganglion cells, the X-cells. The center-surround receptive field of the Q-cell is modeled here quantitatively and the typical Q-cell is described. The temporal properties of the Q-cell receptive field were also investigated and the dynamics of the center mechanism of the Q-cell modeled quantitatively. In addition, the response vs. contrast relationship for a Q-cell at optimal spatial and temporal frequencies is shown, and Q-cells are also demonstrated to have nonlinear spatial summation somewhat like that exhibited by Y-cells, although much higher contrasts are required to reveal this nonlinear behavior. Finally, the relationship between Q-cells and Barlow and Levick's (1969) luminance units was investigated and it was found that most Q-cells could not be luminance units.

Original languageEnglish (US)
Pages (from-to)285-300
Number of pages16
JournalVisual Neuroscience
Volume12
Issue number2
DOIs
StatePublished - Jan 1 1995

Keywords

  • Cat
  • Electrophysiology
  • Receptive fields
  • Retinal ganglion cell
  • W-cells

ASJC Scopus subject areas

  • Physiology
  • Sensory Systems

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