Junqing Chen, Thrasyvoulos N. Pappas, et al.
ACSSC 2004
A metacontrast masking paradigm is presented in which the detectability of a sine-wave target is measured in the presence of a spatially-flanking sine-wave mask. The onset of the mask either precedes (forward masking) or follows (backward masking) the onset of the target. Target detectability is measured as a function of stimulus onset asynchrony (SOA) for stimuli varying in spatial frequency and contrast. For low spatial-frequency targets, target detectability varies as a U-shaped function of SOA both in forward and backward masking. For high spatial frequency targets, U-shaped masking is observed only in backward masking. The magnitude of the masking effect at each SOA of maximal masking (SOAmax) depends on the spatial-frequency similarity of target and mask. SOAmax does not vary with contrast, but does vary with spatial frequency. These data are considered within the context of a model positing inhibitory interactions between the responses of fast- and slow-responding spatial-frequency selective channels, where the latency to channel response increases with spatial frequency. © 1983.
Junqing Chen, Thrasyvoulos N. Pappas, et al.
ACSSC 2004
Jacob Nachmias, Bernice E. Rogowitz
Vision Research
Junqing Chen, Thrasyvoulos N. Pappas, et al.
ICIP 2004
Junqing Chen, Thrasyvoulos N. Pappas, et al.
IS&T/SPIE Electronic Imaging 2003