Perceptual load theory offers a resolution to the long-standing early vs. late selection debate over whether task-irrelevant stimuli are perceived, suggesting that irrelevant perception depends upon the perceptual load of task-relevant processing. However, previous evidence for this theory has relied on RTs and neuroimaging. Here we tested the…

Reviews the literature dealing with the loci and parameters of visual selective attention. It is maintained that input selection can be found at several points in the course of processing. Specifically, a case is made for very early perceptual selection, called perceptual tuning, which can be based on higher-order conceptual or structural stimulus…

Describes experimental approaches used to demonstrate perception without awareness. Maintains that experimental findings based on all four approaches lead to the conclusion that stimuli are perceived even when observers are unaware of the stimuli. Asserts that future research should assess the functions of information perceived without awareness…