Adaptation and dynamics in X-cells and Y-cells of the cat retina

H. G. Jakiela, C. Enroth-Cugell, Robert Shapley

Research output: Contribution to journalArticle

Abstract

On the basis of the spatial summation properties of their receptive fields, cat retinal ganglion cells were classified as either X-cells (linear) or Y-cells (non-linear). Responses were then obtained to a small, centered spot, square-wave modulated in time and superimposed on various levels of diffuse, steady background illumination. When fully dark-adapted, both X-cells and Y-cells produced responses that were entirely sustained. When well lightadapted but still in the scotopic range, both cell types produced largely transient responses with only a very small sustained component. The sustained or transient nature of responses is, therefore, not an invariant characteristic of X-cells and Y-cells in the scotopic range. We also conclude that the mechanism which controls the center's sensitivity in the scotopic range is similar though not identical in the two types of cells.

Original languageEnglish (US)
Pages (from-to)335-342
Number of pages8
JournalExperimental Brain Research
Volume24
Issue number4
DOIs
StatePublished - Feb 1976

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Retina
Cats
Retinal Ganglion Cells
Lighting

Keywords

  • Adaptation
  • Retinal ganglion cells
  • X-cells/Y-cells

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Adaptation and dynamics in X-cells and Y-cells of the cat retina. / Jakiela, H. G.; Enroth-Cugell, C.; Shapley, Robert.

In: Experimental Brain Research, Vol. 24, No. 4, 02.1976, p. 335-342.

Research output: Contribution to journalArticle

Jakiela, H. G. ; Enroth-Cugell, C. ; Shapley, Robert. / Adaptation and dynamics in X-cells and Y-cells of the cat retina. In: Experimental Brain Research. 1976 ; Vol. 24, No. 4. pp. 335-342.
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