Figure 1.

(a) Experimental setup showing the two laser conditions. Red laser dots were either projected directly above participants’ finger tips (Off, represented in green) or were projected directly onto participants’ finger tips (On, represented in red). Standard frequent stimuli were projected in alignment with participants’ index fingers and infrequent deviant stimuli were aligned with participants’ middle fingers.

(b) Participants’ (n = 18) mean accuracy (top) and reaction times (bottom). The On laser condition is represented in red, the Off condition in green. The error bars represent the standard error of the mean (SEM). Participants attended to their left (AL) or right (AR) hands and responded to deviant stimuli aligned with their attended middle finger only.