Specialization of Visual Functions for Different Retinal Areas in the Pigeon
The pigeon’s field of view is largely panoramic. The eyes, placed laterally cover about 320deg, each eye surveying more than 180deg of visual angle. In spite of the large separation of the optic axes, a 30deg binocular overlap has been recently confirmed (Martinoya et al., 1981). Pigeons seem to look at near objects with their frontal binocular field and at distant objects with their lateral monocular fields. This would correspond to a “trident model of vision” as proposed by Rochon-Duvigneaud (1943).
KeywordsVisual Acuity Psychometric Function Optic Tectum Area Dorsalis Central Fovea
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