Effects of mask-to-target energy ratio on cyclopean metacontrast masking
نویسندگان
چکیده
منابع مشابه
The effects of spatial and temporal cueing on metacontrast masking
We studied the effects of selective attention on metacontrast masking with 3 different cueing experiments. Experiments 1 and 2 compared central symbolic and peripheral spatial cues. For symbolic cues, we observed small attentional costs, that is, reduced visibility when the target appeared at an unexpected location, and attentional costs as well as benefits for peripheral cues. All these effect...
متن کاملAttention attenuates metacontrast masking.
The influence of attention on perceptual awareness was examined using metacontrast masking. Attention was manipulated with endogenous cues to assess the effects on the temporal and spatial parameters of target visibility. Experiment 1 examined the time course of effective masking when the target and mask set were presented at an attended vs. an unattended location. The valid allocation of atten...
متن کاملMetacontrast masking depends on luminance transients.
Metacontrast (reduction in brightness of a test gash by the subsequent presentation of a spatially-adjacent masking flash) is abolished if the test and mask flashes are changed in hue with no luminance transients. To obtain metaeontrast. the masking flash need only be a luminance transient of as little as 0.05 log unit. Metacontrast refers to the brightness reduction of a test flash that occurs...
متن کاملMetacontrast masking is specific to luminance polarity
UNLABELLED A 1 degrees -spot was flashed up on a screen, followed by a snugly fitting annular mask. We measured the amount of masking as a function of stimulus luminance. The surround was always mid-gray, the masking ring was either black or white, and the luminance of the spot target ranged from 0% to 100% of white in 4% steps. Observers reported the apparent lightness of the masked spot by ad...
متن کاملQuantitative theories of metacontrast masking.
In metacontrast masking, the effect of a visual mask stimulus on the perceptual strength of a target stimulus varies with the stimulus-onset asynchrony (SOA) between them. As SOA increases, the target percept first becomes weaker, bottoms out at an intermediate SOA, and then increases for still larger SOAs. As a result, a plot of target percept strength against SOA produces a U-shaped masking c...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2010
ISSN: 1534-7362
DOI: 10.1167/9.8.296