Convergence of Y and non-Y channels onto single neurons in the superior colliculi of the cat

C. Wang, W. J. Waleszczyk, G. Benedek, W. Burke, B. Dreher

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Receptive field properties of single neurons in the cat superior colliculus were examined following selective conduction-block of Y-type fibers in contralateral optic nerve. Although the responses evoked by photic stimuli presented via the Y-blocked eye were significantly weaker than those evoked by stimuli presented via the normal eye, > 85% of collicular cells were binocular. Furthermore, when binocular cells were stimulated via the Y-blocked eye their median upper cut-off velocity (100°/s) was significantly lower than that (400°/s) for stimuli presented via the normal eye. Thus, there is a substantial degree of excitatory convergence of Y- and non-Y-information channels on single collicular neurons and the responses to high velocity of motion appear to depend on the integrity of Y-type input.

Original languageEnglish
Pages (from-to)2927-2933
Number of pages7
JournalNeuroReport
Volume12
Issue number13
Publication statusPublished - Sep 17 2001

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Superior Colliculi
Cats
Neurons
Optic Nerve

Keywords

  • Directional selectivity
  • Ocular dominance
  • Relative magnitudes of visual responses
  • Upper cut-off velocities

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Wang, C., Waleszczyk, W. J., Benedek, G., Burke, W., & Dreher, B. (2001). Convergence of Y and non-Y channels onto single neurons in the superior colliculi of the cat. NeuroReport, 12(13), 2927-2933.

Convergence of Y and non-Y channels onto single neurons in the superior colliculi of the cat. / Wang, C.; Waleszczyk, W. J.; Benedek, G.; Burke, W.; Dreher, B.

In: NeuroReport, Vol. 12, No. 13, 17.09.2001, p. 2927-2933.

Research output: Contribution to journalArticle

Wang, C, Waleszczyk, WJ, Benedek, G, Burke, W & Dreher, B 2001, 'Convergence of Y and non-Y channels onto single neurons in the superior colliculi of the cat', NeuroReport, vol. 12, no. 13, pp. 2927-2933.
Wang, C. ; Waleszczyk, W. J. ; Benedek, G. ; Burke, W. ; Dreher, B. / Convergence of Y and non-Y channels onto single neurons in the superior colliculi of the cat. In: NeuroReport. 2001 ; Vol. 12, No. 13. pp. 2927-2933.
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