Abstract

In the study of perception of temporal changes in luminance, it is customary to model perceptual performance as based on one or more linear filters. The task is then to estimate the temporal impulse responses or the representation of the impulse response in the frequency domain. Previously, temporal masking data have been used to estimate the properties and numbers of these temporal mechanisms (filters) in central vision for 1-cycle-per-degree (cpd) targets [Vision Res. 38, 1023 (1998)]. The same methods have been used to explore how properties of the estimated filters change with stimulus contrast energy [J. Opt. Soc. Am. A 14, 2557 (1997)]. We present estimated properties for temporal mechanisms that detect low spatial-frequency patterns. The results indicate that two filters provide the best model for performance when mask contrast is significant. There are also differences between properties for mechanisms that detect signal spatial frequencies of 1 cpd and 1/3 cpd. The sensitivity of the low-pass mechanism relative to the bandpass mechanism is reduced at 1/3 cpd, consistent with previous findings.

© 1999 Optical Society of America

Temporal detection in human vision: dependence on stimulus energy

R. E. Fredericksen and R. F. Hess
J. Opt. Soc. Am. A 14(10) 2557-2569 (1997)

Spatial frequency masking in human vision: binocular interactions

Gordon E. Legge
J. Opt. Soc. Am. 69(6) 838-847 (1979)

Spatial-frequency-tuned mechanisms of the Red–Green channel estimated by oblique masking

RamLakhan Pandey Vimal
J. Opt. Soc. Am. A 19(2) 276-288 (2002)

Red–green and achromatic temporal filters: a ratio model predicts contrast-dependent speed perception

Andrew B. Metha and Kathy T. Mullen
J. Opt. Soc. Am. A 14(5) 984-996 (1997)

Temporal mechanisms underlying flicker detection and identification for red–green and achromatic stimuli

Andrew B. Metha and Kathy T. Mullen
J. Opt. Soc. Am. A 13(10) 1969-1980 (1996)