Visual prior entry for foreground figures.
Attended stimuli reach perceptual-level processes before unattended stimuli do, a finding that is referred to as visual prior entry. We asked whether a similar effect arises for salient objects (foreground figures) in a visual scene. If prior entry holds for figure-ground perception, targets will be perceived to appear earlier on figures than on grounds. Participants performed a temporal order judgment by reporting the order in which targets appeared. Participants perceived that targets appearing on foreground figures occurred earlier than did those appearing on backgrounds. These findings did not result from a response bias for targets appearing on figures. Most important, when figures and grounds were spatially separated and did not share an edge, no prior-entry effects were observed. Our results suggest that figural regions are available to perceptual-level processes sooner than are grounds.
Lester
Benjamin D
BD
University of Iowa, Iowa City, Iowa, USA.
Hecht
Lauren N
LN
Vecera
Shaun P
SP
D001288:Attention; D003118:Color Perception; D004192:Discrimination, Psychological; D005364:Field Dependence-Independence; D006801:Humans; D007600:Judgment; D009949:Orientation; D010364:Pattern Recognition, Visual; D011601:Psychophysics; D011930:Reaction Time