The fact that one always sees things definitely placed in space in relation to oneself is so obvious that one rarely considers the mechanism of the appreciation of the spatial positions. More rarely does one consider the fact that such appreciation of position is a purely subjective phenomenon. This is occasionally impressed on one by discrepancies between the position of an object as determined by the eyes and that determined by tactile-proprioceptive sensation or objectively determined position. This discrepancy appears in cases of recent or fresh paralysis of the extra-ocular muscles which causes binocular diplopia. Immediately after the paralysis there is confusion because of the discrepancy, followed by gradual readjustment as the subject learns to disregard the falsely localized image. The objective interpretation of the relative positions of the double images in such cases, based on the simple laws of monocular projection, is well known, but analysis of
BAIR HL. SOME NEW CONCEPTIONS REGARDING EGO-CENTRIC VISUAL LOCALIZATION. Arch Ophthalmol. 1937;18(3):415–427. doi:10.1001/archopht.1937.00850090083010
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