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Evaluation of the failure of Grassma...

Xu, Jun.

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Evaluation of the failure of Grassman's laws for short wavelength stimuli.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Evaluation of the failure of Grassman's laws for short wavelength stimuli./
Author:	Xu, Jun.
Description:	157 p.
Notes:	Source: Dissertation Abstracts International, Volume: 59-05, Section: B, page: 2135.
Contained By:	Dissertation Abstracts International59-05B.
Subject:	Health Sciences, Ophthalmology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9832205
ISBN:	0591852683

Evaluation of the failure of Grassman's laws for short wavelength stimuli.
Xu, Jun.

Evaluation of the failure of Grassman's laws for short wavelength stimuli. - 157 p.

Source: Dissertation Abstracts International, Volume: 59-05, Section: B, page: 2135.

Thesis (Ph.D.)--The University of Chicago, 1998.

Grassman's laws of color matching are not obeyed for short wavelength lights when color matching functions are obtained from maximally saturated and desaturated matching fields (Crawford, Vision Res. 5:71-78, 1965; Wyszecki & Stiles, Color Science, 1982; Zaidi, Vision Res. 26:1925-1938, 1986). In this study, possible causes of these failures were analyzed.

ISBN: 0591852683Subjects--Topical Terms:

1019445
Health Sciences, Ophthalmology.

Evaluation of the failure of Grassman's laws for short wavelength stimuli.
LDR:02336nmm 2200301 4500 001 1841484
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040 $a UnM $c UnM
100 1 $a Xu, Jun. $3 1297291
245 1 0 $a Evaluation of the failure of Grassman's laws for short wavelength stimuli.
300 $a 157 p.
500 $a Source: Dissertation Abstracts International, Volume: 59-05, Section: B, page: 2135.
500 $a Adviser: Joel Pokorny.
502 $a Thesis (Ph.D.)--The University of Chicago, 1998.
520 $a Grassman's laws of color matching are not obeyed for short wavelength lights when color matching functions are obtained from maximally saturated and desaturated matching fields (Crawford, Vision Res. 5:71-78, 1965; Wyszecki & Stiles, Color Science, 1982; Zaidi, Vision Res. 26:1925-1938, 1986). In this study, possible causes of these failures were analyzed.
520 $a In Experiment 1, a difference in color matching functions for short wavelength lights from saturated and desaturated matches was replicated. In Experiment 2, color matches were performed to determine whether factors related to SWS cones contributed to the failure of these laws. These factors were: (1) Change of SWS cone excitation between the saturated and the desaturated matches; (2) The poor spatial resolution power of the S-cones; (3) Variation in the distribution of SWS cone sensitivity. In Experiment 3, asymmetry in discrimination around matches was analysed. In Experiment 4, spatial inhomogeneity of macular pigment was studied as a contributor to the failure of Grassman's laws. Experiments 5 and 6 looked at post-receptoral mechanisms, luminance and hue mechanisms, in saturated and desaturated color matching.
520 $a The results pointed to two factors, the spatial inhomogeneity of macular pigment and a change in the weights of post receptoral mechanisms, as the possible cause of failures in Grassman's laws with desaturation of the color matching field.
590 $a School code: 0330.
650 4 $a Health Sciences, Ophthalmology. $3 1019445
650 4 $a Physics, Optics. $3 1018756
690 $a 0381
690 $a 0752
710 2 0 $a The University of Chicago. $3 1017389
773 0 $t Dissertation Abstracts International $g 59-05B.
790 1 0 $a Pokorny, Joel, $e advisor
790 $a 0330
791 $a Ph.D.
792 $a 1998
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9832205