Binocular detection of positive and negative flashes |
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Authors: | David H. Westendorf Robert Fox |
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Affiliation: | 1. Vanderbilt University, 37240, Nashville, Tennessee
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Abstract: | Binocular forced-choice detection rates were measured under conditions where both eyes received positive flashes, both eyes received negative flashes, and one eye received a positive flash while the other received a negative flash. When both eyes received the same kind of flash, both positive or both negative, detection rates were,greater than probability summation. When one eye received a positive flash while the other received a negative flash, detection rates were near a level expected on the basis of probability summation. It is concluded that, at the level of forced-choice detection. positive and negative flashes are detected as though they were separate, independent events. |
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