Shorter articles and notes two more visual theorems |
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Authors: | G. S. Brindley |
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Affiliation: | a Physiological Laboratory, Cambridge |
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Abstract: | The basis of the widely held opinion that the spectral sensitivities of the mechanisms determining trichromacy must be linearly related to the spectral mixture functions is examined, and a proof from simple assumptions is stated.
It is proved also that, on the van der Velden hypothesis of independent sensitive units, a spatial or temporal summation law of the form AIn = c implies a frequency-of-seeing curve of the form Q = I—e-KIn (Q = probability of detecting a stimulus of size A and intensity I; n, c and K are constants). |
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