Visual Orientation Selectivity Based Structure Description
نویسندگان
چکیده
منابع مشابه
Subcortical orientation biases explain orientation selectivity of visual cortical cells
The primary visual cortex of carnivores and primates shows an orderly progression of domains of neurons that are selective to a particular orientation of visual stimuli such as bars and gratings. We recorded from single-thalamic afferent fibers that terminate in these domains to address the issue whether the orientation sensitivity of these fibers could form the basis of the remarkable orientat...
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Altered sensory experience in early life often leads to remarkable adaptations so that humans and animals can make the best use of the available information in a particular environment. By restricting visual input to a limited range of orientations in young animals, this investigation shows that stimulus selectivity, e.g., the sharpness of tuning of single neurons in the primary visual cortex, ...
متن کاملOrientation selectivity without orientation maps in visual cortex of a highly visual mammal.
In mammalian neocortex, the orderly arrangement of columns of neurons is thought to be a fundamental organizing principle. In primary visual cortex (V1), neurons respond preferentially to bars of a particular orientation, and, in many mammals, these orientation-selective cells are arranged in a semiregular, smoothly varying map across the cortical surface. Curiously, orientation maps have not b...
متن کاملVisual Cells Remember Earlier Applied Target: Plasticity of Orientation Selectivity
BACKGROUND A canonical proposition states that, in mature brain, neurons responsive to sensory stimuli are tuned to specific properties installed shortly after birth. It is amply demonstrated that that neurons in adult visual cortex of cats are orientation-selective that is they respond with the highest firing rates to preferred oriented stimuli. METHODOLOGY/PRINCIPAL FINDINGS In anesthetized...
متن کاملAn Emergent Model of Visual Cortical Orientation Selectivity
We demonstrate a cortical circuit based on known anatomical details and cellular properties which achieves sharp orientation tuning despite poorly tuned thalamo-cortical input. Sharp tuning arises emergently from excitatory interactions between similarly tuned neurons, which also receive broadly tuned inhibition. This model accounts for data obtained from intracellular recording and pharmacolog...
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ژورنال
عنوان ژورنال: IEEE Transactions on Image Processing
سال: 2015
ISSN: 1057-7149,1941-0042
DOI: 10.1109/tip.2015.2460467