Abstract：
:A large number of studies, using a wide variety of experimental techniques, have investigated the "higher-order" color mechanisms proposed by Krauskopf and colleagues in 1986. Results reviewed here come from studies of chromatic discrimination at threshold, habituation, classification images, spatial alignment and orientation effects, and noise masking. The bulk of the evidence has been taken to support the existence of multiple, linear color mechanisms in addition to (or after) the three putative low-level cardinal mechanisms. But there remain disconcerting inconsistencies in the results of noise masking experiments, and the results of chromatic discrimination experiments clearly show that there are a very limited number of labeled-line mechanisms near threshold. No consensus on higher order mechanisms has been reached even after more than 20 years of study.
journal_name
Vision Resjournal_title
Vision researchauthors
Eskew RT Jrdoi
10.1016/j.visres.2009.07.005subject
Has Abstractpub_date
2009-11-01 00:00:00pages
2686-704issue
22eissn
0042-6989issn
1878-5646pii
S0042-6989(09)00328-9journal_volume
49pub_type
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