Adding external noise can trigger a change in processing strategy R Allard |
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Visual Psychophysics and Perception Lab, Université de Montréal, QC, Canada
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| External noise has been widely used to characterize visual processing. When adding external noise it is usually implicitly assumed that the processing strategy is unaffected, i.e. the stimulus is processed by the same mechanisms having the same properties. However, recent findings showed that this noise-invariant processing assumption can be violated. Thus, one cannot assume a priori that the processing strategy is unaffected by the addition of external noise, which limits the usefulness of external noise paradigms and questions previous findings. I will review various conditions in which adding external noise elicited a change in processing strategy, violating the noise-invariant assumption that underlies external noise paradigms. |
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