Detail Rapid Integration of Contour Fragments: From Simple Filling-in to Parts-based Shape Description   Oleh:  Lamote, Christian ; Wagemans, Johan Jenis: Article from Books Dalam koleksi: The Neuroscience of Perceptual Integration : A Special issue of visual cognition, page 345 - 361 . Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: 153.4 NEU Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel Line drawings are easy to recognize, although the only information to the visual system is the contour itself. Starting from information theory and a theory of decomposition in parts, we investigated whether certain regions of such a contour are perceptually more relevant than others, using a deletion detection paradigm. In this paradigm, high detectability means poor contour integration, and vice versa. Regions of interest were curvature singularities, namely positive maxima (M+), negative minima (m-) and inflection points (I), of smooth, closed contours. In Experiment 1, we performed a first exploration of the detectability of deletions around these three types of curvature singularities. M+ deletions were easier to detect than the deletions around the other two singularities, a result that is explained using a post hoc combination of both mentioned theoretical frameworks. In Experiment 2, we replicated these findings using figure-background reversal, so thatthe same physical deletions could either be M+ or m-. Again, the M+ deletions were easier to detect than m- deletions. Although both types of singularities involve regions of high curvature changes, they differ in that mdeletions create gaps that concur with spontaneous segmentation. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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