A centrifugally controlled circuit in the avian retina and its possible role in visual attention switching

Visual Neuroscience
P G ClarkeS Catsicas

Abstract

The isthmo-optic nucleus (ION) is the main source of efferents to the retina in birds. Isthmo-optic neurons project in topographical order on amacrine cells in the ventral parts of the retina, and a subclass of these known as proprioretinal neurons project onto the dorsal retina. We propose that, through the intermediary of the amacrine target cells, activity in the isthmo-optic pathway excites ganglion cells locally in the ventral retina but inhibits those in dorsal regions. This circuit would thereby mediate centrifugally controlled switches in attention between the dorsal retina, involved in feeding, and the more ventral parts, involved in scanning for predators. This hypothesis accounts for a wide range of disparate data from behavior, comparative anatomy, endocrinology, hodology, and neurophysiology.

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Citations

Mar 10, 2000·Brain Research Bulletin·J HuS R Wang
Mar 20, 2009·Visual Neuroscience·Cynthia WellerMartin Wilson
Apr 29, 2011·Visual Neuroscience·Martin Wilson, Sarah H Lindstrom
Dec 30, 2014·Neuroscience and Biobehavioral Reviews·O Rosa SalvaG Vallortigara
Nov 25, 2011·Journal of Morphology·Nicole L SchieberNathan S Hart
Sep 1, 2015·Frontiers in Neuroscience·Douglas R WylieAndrew N Iwaniuk
Mar 4, 2017·The Journal of Comparative Neurology·Quirin KrabichlerHarald Luksch
Dec 4, 2003·The Journal of Comparative Neurology·Monique MédinaDom Miceli
Jul 13, 2004·The Journal of Comparative Neurology·Hiroyuki UchiyamaHiroshi Ohno
Apr 13, 2000·Brain Research. Brain Research Reviews·J Mey, S Thanos

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