Selective modulations of attentional asymmetries after sleep deprivation

► Vigilance levels can modulate leftward attentional bias (LWB) in young healthy subjects. ► Sleep deprivation (SD) impacts vigilance but not attentional asymmetries in spatial judgments (landmark task). ► SD-related asymmetries in luminance judgment (greyscales task) are better explained by circadian factors. ► LWB in landmark and greyscales tasks is consistent within individuals across sessions, but the two tasks are unrelated. ► Selective circadian modulations on attentional asymmetries suggest a neural dissociation between the two tasks.