Beyond the feedforward sweep: feedback computations in the visual cortex
نویسندگان
چکیده
منابع مشابه
Feedforward, horizontal, and feedback processing in the visual cortex.
The cortical visual system consists of many richly interconnected areas. Each area is characterized by more or less specific receptive field tuning properties. However, these tuning properties reflect only a subset of the interactions that occur within and between areas. Neuronal responses may be modulated by perceptual context or attention. These modulations reflect lateral interactions within...
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Hierarchical organization is a common feature of mammalian neocortex. Neurons that send their axons from lower to higher areas of the hierarchy are referred to as "feedforward" (FF) neurons, whereas those projecting in the opposite direction are called "feedback" (FB) neurons. Anatomical, functional, and theoretical studies suggest that these different classes of projections play fundamentally ...
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Visual sensory input stimuli are rapidly processed along bottom-up feedforward cortical streams. Beyond such driving streams neurons in higher areas provide information that is re-entered into the representations and responses at the earlier stages of processing. The precise mechanisms and underlying functionality of such associative feedforward/feedback interactions are not resolved. This work...
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This paper reviews some of the recent neurophysiological studies that explore the variety of visual computations in the early visual cortex in relation to geometric inference, i.e. the inference of contours, surfaces and shapes. It attempts to draw connections between ideas from computational vision and findings from awake primate electrophysiology. In the classical feed-forward, modular view o...
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ژورنال
عنوان ژورنال: Annals of the New York Academy of Sciences
سال: 2020
ISSN: 0077-8923,1749-6632
DOI: 10.1111/nyas.14320