Inhibition around visual stimuli
Author(s)
Chappell, M
Griffith University Author(s)
Year published
2006
Metadata
Show full item recordAbstract
Kirschfeld and Kammer (1999), and independently Kanai, Sheth and Shimojo (2004), proposed that an inhibitory wake trails a moving visual stimulus, and a bow-wave like region of excitation precedes it. Using the perceived luminance of a small flash as a psychophysical probe, I demonstrate that indeed a region of significant inhibition extends behind a moving stimulus. However, in contradiction to these models, the region of inhibition also extends ahead of the moving stimulus, as well as to the side. In regions immediately around the moving stimulus, the average effect size (d) is estimated to be greater than three. ...
View more >Kirschfeld and Kammer (1999), and independently Kanai, Sheth and Shimojo (2004), proposed that an inhibitory wake trails a moving visual stimulus, and a bow-wave like region of excitation precedes it. Using the perceived luminance of a small flash as a psychophysical probe, I demonstrate that indeed a region of significant inhibition extends behind a moving stimulus. However, in contradiction to these models, the region of inhibition also extends ahead of the moving stimulus, as well as to the side. In regions immediately around the moving stimulus, the average effect size (d) is estimated to be greater than three. Effects of the visual stimulus without its motion attribute, and masking effects of the moving stimulus, were controlled for.
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View more >Kirschfeld and Kammer (1999), and independently Kanai, Sheth and Shimojo (2004), proposed that an inhibitory wake trails a moving visual stimulus, and a bow-wave like region of excitation precedes it. Using the perceived luminance of a small flash as a psychophysical probe, I demonstrate that indeed a region of significant inhibition extends behind a moving stimulus. However, in contradiction to these models, the region of inhibition also extends ahead of the moving stimulus, as well as to the side. In regions immediately around the moving stimulus, the average effect size (d) is estimated to be greater than three. Effects of the visual stimulus without its motion attribute, and masking effects of the moving stimulus, were controlled for.
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Conference Title
AUSTRALIAN JOURNAL OF PSYCHOLOGY
Volume
58
Subject
Cognitive and computational psychology