Fig. 2: Covert spatial orienting of attention enhances the perceptual sensitivity to visual asynchronies.

The perceptual sensitivity reflects the participants’ ability to discriminate simultaneous from asynchronous onsets of the two visual events. a Perceptual sensitivity increases proportionally with the SOA. b Cue-based spatial, but not temporal, orienting of attention enhances the perceptual sensitivity to asynchronies. Error bars represent one confidence interval from the mean. N = 35 participants.