Abstract and Keywords
The relation between perception and attention is discussed, via a taxonomy of attention centered around function. Five kinds are distinguished. The first is sampling, involving the pickup of information by the eye. The second is filtering (or gating), the control of information considered relevant. The third is binding, involving the formation of more integrated structure over space. Fourth is holding, which creates the coherent structure necessary to perceive continuity over time. Fifth is indexing, which enables individuation of selected items. The function of each is discussed, along with several associated behavioral effects and perceptual deficits, the mechanisms believed to carry it out, and possible relation to conscious visual experience. Discussion is also given of the implicit processing carried out both prior to and independent of any kind of attention, in the complete absence of conscious visual experience.
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