Abstract
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.
Highlights
Successful interaction with the visual world depends on the ability to recognize visual objects quickly and accurately, despite countless variations in their appearance and settings
As expected, recognition of a repeated item critical item 2 (C2) was worse than recognition of a non-repeated item; this is the repetition blindness” (RB) effect
This effect depends on the spatial frequency (SF) content of the stimulus
Summary
Successful interaction with the visual world depends on the ability to recognize visual objects quickly and accurately, despite countless variations in their appearance and settings. The parvocellular visual pathway, which is predominantly involved in the processing of high SFs (HSFs), has slower responses than the magnocellular visual pathway, which processes low SFs (LSFs; Legge, 1978) These observations, which suggest that the human visual system processes information at different spatial scales separately, have inspired a “frame and fill” model of object recognition (Park et al, 1996; Mc Sorley and Findlay, 2002; Bar, 2003; Calderone et al, 2012). LSFs convey global information about shape, general orientation, and proportion (Bar, 2003), or relationships between object parts (Gosselin, 2001; Bar, 2003; Goffaux et al, 2003, 2005) This global information is used to form proto-object representations, which are compatible with multiple candidate objects. The visual system could instead use several SF bands, either depending on the task (Schyns and Oliva, 1997, 1999), or on the size of an object (Gold et al, 1999) to establish a mapping between distance-dependent absolute SF information and diagnostic object-based SF information
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