In explaining unattended or “subconscious” perception, Dixonian theory supposes that unattended percepts are unconscious. Alternatively, the theory of cognitive-state monitoring supposes that one's unattended percepts are conscious sensations, which are accompanied by no selfconsciousness that one is perceiving, rather than imaging, them. Consistent with the latter theoretical supposition, the results of the current experiment show that previously unattended stimuli are memorially indistinguishable both from previously attended stimuli and from previously imaged stimuli.
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