Top - Down Feedback Highlights Relevant Locations Neural Mechanisms of Visual Attention
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منابع مشابه
Mechanisms of top-down attention.
Attention exhibits characteristic neural signatures in brain regions that process sensory signals. An important area of future research is to understand the nature of top-down signals that facilitate attentional guidance towards behaviorally relevant locations and features. In this review, we discuss recent studies that have made progress towards understanding: (i) the brain structures and circ...
متن کاملSaalmann , Top - Down Feedback Highlights Relevant Locations Neural Mechanisms of Visual Attention : How
www.sciencemag.org (this information is current as of August 30, 2007 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/316/5831/1612 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/316/5831/1612/DC1 can be fou...
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In a crowded visual scene, we typically employ attention to select stimuli that are behaviorally relevant. Two likely cortical sources of top-down attentional feedback to cortical visual areas are the prefrontal (PFC) and posterior parietal (PPC) cortices. Recent neurophysiological studies show that areas in PFC and PPC process signals about the locus of attention earlier than in extrastriate v...
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How does the brain bind together visual features that are processed concurrently by different neurons into a unified percept suitable for processes such as object recognition? Here, we describe how simple, commonly accepted principles of neural processing can interact over time to solve the brain's binding problem. We focus on mechanisms of neural inhibition and top-down feedback. Specifically,...
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