Apparent Depth of Modulation as a Function of Frequency and Amplitude of Temporal Modulations of Luminance*
- 1 July 1970
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 60 (7), 970-977
- https://doi.org/10.1364/josa.60.000970
Abstract
White light was temporally modulated and subjects gave magnitude estimations of the apparent depth of modulation. Three stimulus parameters were varied: level of time-average luminance, amplitude of modulation, and frequency of modulation. At the lowest luminances, apparent depth of modulation decreased monotonically as modulation frequency increased toward fusion. At the higher luminances, only large amplitudes of modulation produced monotonic functions relating apparent depth of modulation to frequency; smaller amplitudes of modulation produced nonmonotonic functions with maxima in the region of 5–10 Hz. Derived contours relating modulation amplitude to frequency for constant apparent depth of modulation generally resemble functions relating modulation amplitude to frequency for threshold.Keywords
This publication has 17 references indexed in Scilit:
- Brightness Enhancement in Intermittent Light: Variation of Luminance and Light–Dark Ratio*Journal of the Optical Society of America, 1966
- Individual brightness functionsPerception & Psychophysics, 1966
- Brightness Function: Effects of Adaptation*Journal of the Optical Society of America, 1963
- Visual Responses to Time-Dependent Stimuli* III Individual Variations†Journal of the Optical Society of America, 1962
- Eye’s Response at Flicker Fusion to Square-Wave Modulation of a Test Field Surrounded by a Large Steady Field of Equal Mean LuminanceJournal of the Optical Society of America, 1961
- Visual Responses to Time-Dependent Stimuli* I Amplitude Sensitivity Measurements†Journal of the Optical Society of America, 1961
- Die Abhängigkeit der subjektiven Helligkeit intermittierender Lichtreize von der Flimmerfrequenz (Brücke-Effekt, „brightness enhancement“): Untersuchungen bei verschiedener Leuchtdichte und FeldgrößePsychological Research, 1961
- On Some Properties of Nonthreshold FlickerJournal of the Optical Society of America, 1958
- Relationship between Critical Flicker-Frequency and a Set of Low-Frequency Characteristics of the EyeJournal of the Optical Society of America, 1954
- Critical Frequency Relations in Scotopic VisionJournal of the Optical Society of America, 1922