The observation of cueing effects (faster responses for cued than uncued targets) rapidly following centrally-presented arrows has led to the suggestion that arrows trigger rapid automatic shifts of spatial attention. However, these effects have primarily been observed during easy target-detection tasks when both cue and target remain on the…

It has been argued that numbers are spatially organized along a "mental number line" that facilitates left-hand responses to small numbers, and right-hand responses to large numbers. We hypothesized that whenever the representations of visual and numerical space are concurrently activated, interactions can occur between them, before response…

Observers demonstrate an impaired ability to report the second of two targets in a "rapid serial visual presentation" (RSVP) stream if it appears within 500 ms of the first target--a phenomenon known as the "attentional blink." This study investigated the fate of stimuli in dual-target RSVP streams that do not require report--the distractors. In…