Wavelength dependence of temporal discrimination at scotopic luminances

Year: 1974

Authors: Ronchi L., Molesini G.

Autors Affiliation: Istituto Nazionale di Ottica

Abstract: By applying the two-pulse technique, the time resolving power of the dark-adapted peripheral retina is found to depend on stimulus wavelength. This contradicts the current idea, according to which, in the low scotopic range, the visual system is univariant. Our findings might be accounted for by suggesting that the temporal coding of the input, at absolute threshold, is mediated by a number of mechanisms with different time constants.


Volume: 29(3)      Pages from: 465  to: 472

KeyWords: Luminance; Night vision; Normal human; Spectral sensitivity; Theoretical study; Time perception