Arzola-Veltkamp G M, Weber A, Schmidt T, 2011, "Tracing the time-course of figure-ground segmentation via response priming" Perception 40 ECVP Abstract Supplement, page 179
Tracing the time-course of figure-ground segmentation via response priming
G M Arzola-Veltkamp, A Weber, T Schmidt
Figure-ground perception is a complex sequential process initiated by detection of borders and followed by surface enhancement or filling in of the image [Grossberg's model; Grossberg, 1994 Perception & Psychophysics 5 48–120; 1996 Encyclopedia of Neuroscience (Amsterdam: Elsevier Science)]. Normal perception of figure and ground relies on recurrent processing of signals and is informed by feedback processes (Heinen et al, 2005 NeuroReport 16 1483–1487]. Conversely, border detection and assignment processes have been ascribed to the first feed-forward sweep of visual processing (Supèr et al, 2010 PloS ONE 5 e10705). Using textured stimuli consisting of random line arrays in varying degrees of orientation, we measured speeded key-press responses to the target stimuli. In each trial, target stimuli where preceded by consistent or inconsistent prime stimuli, and onset times were also varied. We then compared response priming effects arising from local texture differences, figure-ground relations, and differences in the figures’ contours. Priming effects were observed under all these conditions; however, distinct response time patterns and errors rates may reflect differences in depth of processing requirements.
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