00000caa a22000003a 4500 UP-8027390931312519176 Buklod 20200413150811.0 o--- | || || ta 200413s xx d r |||| u| 0033-2909. (iLib)UPCEB-00011919607 Edz Graf, Makus. Coordinate Transformations in Object Recognition. [article]. pp.920-945. A basic problem of visual perception is how human beings recognize objects after spatial transformations. Three central classes of findings have to be accounted fro (a) Recognition performance varies systematically with orientation, size and position; (b) recognition latencies are sequentially additive, suggesting analogue transformation processes; and (c) orientation and size congruency effects indicate that recognition invloves the adjustment of a reference frame. All 3 classes of findings can be explained by a transformational framework of recognition : Recognition is achieved by an analogue transformation of a perpetual coordinate system that aligns memory and input representations. Coordinate transformation can be implemented neurocomputationally by gain (amplitude) modulation and may be regarded as a general processing principle of the visual cortex. -- (from the author) Alignment. Cordinate transformations. Gain modulation. Object recognition. Reference frames. Psychological Bulletin vol. 132, 6 ( 2006). Analytics