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- W2981493664 abstract "Abstract The processing of a visual stimulus is known to be influenced by the statistics in recent visual history and by the stimulus’ visual surround. Such contextual influences lead to perceptually salient phenomena, such as the tilt aftereffect and the tilt illusion. Despite much research on the influence of an isolated context, it is not clear how multiple, possibly competing sources of contextual influence interact. Here, using psychophysical methods, we compared the combined influence of multiple contexts to the sum of the isolated context influences. The results showed large deviations from linear additivity for adjacent or overlapping contexts, and remarkably, clear additivity when the contexts were sufficiently separated. Specifically, for adjacent or overlapping contexts, the combined effect was often lower than the sum of the isolated component effects (sub-additivity), or was more influenced by one component than another (selection). For contexts that were separated in time (600 ms), the combined effect measured the exact sum of the isolated component effects (in degrees of bias). Overall, the results imply an initial compressive transformation during visual processing, followed by selection between the processed parts. Highlights Non-linear sub-additivity for increased context area or contrast Non-linear selection between overlapping or adjacent, dissimilar contexts Linear additivity for combinations of temporally separated contexts" @default.
- W2981493664 created "2019-11-01" @default.
- W2981493664 creator A5022413450 @default.
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- W2981493664 date "2019-10-25" @default.
- W2981493664 modified "2023-10-17" @default.
- W2981493664 title "Interaction of contexts in context-dependent orientation estimation" @default.
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- W2981493664 doi "https://doi.org/10.1101/816355" @default.
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