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An extension of Helmholtz's explanation of Listing's law
Author(s) -
Clement R. A.
Publication year - 1990
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.1990.tb00884.x
Subject(s) - helmholtz free energy , fixation (population genetics) , extension (predicate logic) , listing (finance) , helmholtz equation , plane (geometry) , point (geometry) , fixation point , mathematics , law , geometry , physics , computer science , mathematical analysis , computer vision , political science , medicine , economics , boundary value problem , population , environmental health , finance , quantum mechanics , programming language
Helmholtz argued that the eye moves in accordance with Listing's law to ensure that objects have the same apparent direction despite changes in the point of fixation. Listing's law ensures that the same pattern of image displacements is associated with a given eye movement, independent of the initial point of fixation. His explanation has been extended to the problem of ensuring that objects remain at the same apparent depth, with both direct and indirect fixation. This problem is simplified if disparity is analysed in the region of the frontal plane.
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