Abstract
Behavioral perimetry methods were used to assess the monocular visual fields of 12 cats that had received intraocular injections of antibodies against large (alpha/Y) retinal ganglion cells. The antibodies produced defects in head and eye orientation responses to stimuli presented in the nasal visual field of the treated eye; responses to stimuli in the temporal visual hemifield were normal. Similar results were seen in cats that received antibody injections at 4 weeks of age or as adults. In the context of previous results, these findings suggest that a loss of Y cells in the lateral geniculate nucleus is sufficient to reduce geniculocortical function for head and eye orientation to visual stimuli in the nasal visual field.
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