منابع مشابه
Six Principles of Visual Cortical Dynamics
A fundamental goal in vision science is to determine how many neurons in how many areas are required to compute a coherent interpretation of the visual scene. Here I propose six principles of cortical dynamics of visual processing in the first 150 ms following the appearance of a visual stimulus. Fast synaptic communication between neurons depends on the driving neurons and the biophysical hist...
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This review describes and motivates six principles for computational cognitive neuroscience models: biological realism, distributed representations, inhibitory competition, bidirectional activation propagation, error-driven task learning, and Hebbian model learning. Although these principles are supported by a number of cognitive, computational and biological motivations, the prototypical neura...
متن کاملCortical synchronization suggests neural principles of visual feature grouping.
Compositions of visual scenes are related here to neural signals in visual cortex and to cortical circuit models to understand neural mechanisms of perceptual feature grouping. Starting from the hypothesis that synchronization and decoupling of cortical gamma-activities (35-90 Hz) define the relations among visual objects, we concentrate on synchronization related to (1) static retinal stimulat...
متن کاملPrimary Cortical Dynamics for Visual Grouping
The classical receptive elds of V1 neurons contain only local visual input features. The visual system must group separate local elements into meaningful global features to infer the visual objects in the scene. Local features can group into regions, as in texture segmen-tation; or into contours which may represent boundaries of underlying objects. I propose that the primary visual cortex (V1) ...
متن کاملCortical Dynamics Subserving Visual Apparent Motion
Motion can be perceived when static images are successively presented with a spatial shift. This type of motion is an illusion and is termed apparent motion (AM). Here we show, with a voltage sensitive dye applied to the visual cortex of the ferret, that presentation of a sequence of stationary, short duration, stimuli which are perceived to produce AM are, initially, mapped in areas 17 and 18 ...
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ژورنال
عنوان ژورنال: Frontiers in Systems Neuroscience
سال: 2010
ISSN: 1662-5137
DOI: 10.3389/fnsys.2010.00028