Abstract:
:The spectral properties of human color detection mechanisms were measured using a noise masking technique that minimizes the possibility of off-axis looking and artifactually narrow estimates of bandwidth. Observers were induced to use a single detection mechanism throughout a spectral bandwidth measurement by using sectored noise to mask a time-varying signal of fixed chromatic properties. Sectored noise draws samples from sectors of variable width in the color plane, centered on the signal axis. Contrast thresholds for equiluminant signals that appeared yellow, orange, red and violet were found to depend on the power of the noise, projected along the chromatic axis of the signal, but not on the sector width of the noise. These results are consistent with the activity of spectrally broadband, linear detection mechanisms that are tuned to the signal color directions tested.
journal_name
Vision Resjournal_title
Vision researchauthors
D'Zmura M,Knoblauch Kdoi
10.1016/s0042-6989(97)00381-7subject
Has Abstractpub_date
1998-10-01 00:00:00pages
3117-28issue
20eissn
0042-6989issn
1878-5646pii
S0042-6989(97)00381-7journal_volume
38pub_type
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