http://precedings.nature.com/tags/visual%20perception Recently posted documents tagged with 'visual perception' Nature Publishing Group en Nature Precedings http://precedings.nature.com/images/header_logo.gif http://precedings.nature.com http://precedings.nature.com/documents/3436/version/1 The interconnection between vision and somatosensation is already well-established and is further supplemented by the evolutionary link between eyes and photoreceptors, and the functional connection between photosensation and thermoreception. However, our analysis hypothesizes a possibility that vision is not just linked to somatosensation, but may not exist without somatosensation. Surprisingly, our photoreceptor itself needs somatosensory proteins for its functioning, and our entire visual pathway depends on somatosensory cues for its functioning. http://precedings.nature.com/documents/3436/version/1 Fri, 17 Jul 2009 14:46:25 UTC Can Vision Exist Without Somatosensation? hdl:10101/npre.2009.3436.1 2009-07-17 Manivannan Muniyandi Nature Precedings 2009-07-17T14:46:25Z Manuscript Molecular Cell Biology Neuroscience http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/2467/version/1 What is the functional relationship between face-selective and expertise-predicated object-selective regions in the human middle fusiform gyrus? In two separate fMRI experiments, superior behaviorally-measured bird expertise predicts both higher middle fusiform gyrus selectivity for birds and, concomitantly, lower selectivity for faces. This finding suggests a long-term dynamic reorganization of the neural mechanisms underlying the visual recognition of faces and non-face. http://precedings.nature.com/documents/2467/version/1 Wed, 05 Nov 2008 21:20:53 UTC Dynamic reorganization of the middle fusiform gyrus: long-term bird expertise predicts decreased face selectivity hdl:10101/npre.2008.2467.1 2008-11-05 Michael J. Tarr Nature Precedings 2008-11-05T21:20:53Z Manuscript Neuroscience http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/1506/version/1 Visual disappearance illusions – such as motion-induced blindness (MIB) – are commonly used to study the neural underpinnings of visual perception. In such illusions a salient visual target becomes perceptually invisible. Previous studies are inconsistent regarding the role of primary visual cortex (V1) in these illusions. Here we provide physiological and psychophysical evidence supporting a role for V1 in generating MIB. http://precedings.nature.com/documents/1506/version/1 Wed, 09 Jan 2008 22:11:41 UTC Physiological Mechanisms Underlying Motion-Induced Blindness hdl:10101/npre.2008.1506.1 2008-01-09 Camilo Libedinsky Nature Precedings 2008-01-09T22:11:41Z Manuscript Neuroscience http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/1433/version/1 More than 70 years ago Gestalt psychologist Kurt Koffka described a fascinating effect1,2: When a contiguous grey ring is placed on a background half of one shade of grey (different from the ring) and half of another shade of grey, the ring appears to be a homogenous. However, if the ring is slightly divided, now the two halves of the ring appear different shades of grey with the half of the ring on the darker background appearing lighter than the half of the ring on the darker background. The Gestalt principle of continuity in visual perception is invoked to explain this effect. Here we show that in fact when the ring is made thinner it appears heterogeneous even when contiguous. Furthermore, when viewing a thick ring after first viewing a thin ring, the thick ring now too appears heterogenous! These effects are also demonstrated with a colored background and backgrounds with more than two regions. We show that standard simultaneous brightness and color contrast weaken with larger test patches. Thus, Koffka’s ring effect is due to vanishingly weak simultaneous contrast for a sufficiently thick ring, not continuity. http://precedings.nature.com/documents/1433/version/1 Mon, 17 Dec 2007 22:56:36 UTC Koffka’s Ring Effect Depends on Thickness, Not Continuity hdl:10101/npre.2007.1433.1 2008-04-27 Eric L. Altschuler Nature Precedings 2007-12-17T22:56:36Z Manuscript Neuroscience http://creativecommons.org/licenses/by/3.0/