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- W1974490228 abstract "Abstract The brightness sensation of brief flashes in a uniform visual field a ganzfeld, was determined over an 8 log unit range of light intensity using the psychophysical method of magnitude estimation. Subjective estimates of brightness increased monotonically with light intensity over the range of 10 7 –10 15 photons/sec/cm 2 at the cornea, indicating that brightness can be scaled in the absence of spatial contrast. At high luminance levels the subjective estimates approximate power functions of the light intensity with exponents ranging from 0.24 to 0.30. Near threshold the exponents approach a value of 1.0. Substantial changes in the configuration of the test flash (duration, size, or rise time) did not produce significant changes in the subjective estimates. The results are discussed with regard to possible neural mechanisms for coding light intensity." @default.
- W1974490228 created "2016-06-24" @default.
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- W1974490228 date "1976-01-01" @default.
- W1974490228 modified "2023-10-14" @default.
- W1974490228 title "Brightness sensation in a ganzfeld" @default.
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- W1974490228 doi "https://doi.org/10.1016/0042-6989(76)90056-0" @default.
- W1974490228 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/1007002" @default.
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