Repetition blindness for natural images of objects with viewpoint changes.
When stimuli are repeated in a rapid serial visual presentation (RSVP), observers sometimes fail to report the second occurrence of a target. This phenomenon is referred to as "repetition blindness" (RB). We report an RSVP experiment with photographs in which we manipulated object viewpoints between the first and second occurrences of a target (0°, 45°, or 90° changes), and spatial frequency (SF) content. Natural images were spatially filtered to produce low, medium, or high SF stimuli. RB was observed for all filtering conditions. Surprisingly, for full-spectrum (FS) images, RB increased significantly as the viewpoint reached 90°. For filtered images, a similar pattern of results was found for all conditions except for medium SF stimuli. These findings suggest that object recognition in RSVP are subtended by viewpoint-specific representations for all spatial frequencies except medium ones.
Institut de Recherche Biomédicale des Armées Brétigny sur Orge, France.
Stéphane
S
Buffat
Justin
J
Plantier
Corinne
C
Roumes
Jean
J
Lorenceau
natural images; object recognition; repetition blindness; spatial frequency; viewpoint dependence