Continuous vs. categorical representation of feature-based attentional priority in human frontoparietal cortex
نویسندگان
چکیده
منابع مشابه
A hierarchy of attentional priority signals in human frontoparietal cortex.
Humans can voluntarily attend to a variety of visual attributes to serve behavioral goals. Voluntary attention is believed to be controlled by a network of dorsal frontoparietal areas. However, it is unknown how neural signals representing behavioral relevance (attentional priority) for different attributes are organized in this network. Computational studies have suggested that a hierarchical ...
متن کاملFeature-Selective Attentional Modulations in Human Frontoparietal Cortex.
UNLABELLED Control over visual selection has long been framed in terms of a dichotomy between "source" and "site," where top-down feedback signals originating in frontoparietal cortical areas modulate or bias sensory processing in posterior visual areas. This distinction is motivated in part by observations that frontoparietal cortical areas encode task-level variables (e.g., what stimulus is c...
متن کاملFeature-specific attentional priority signals in human cortex.
Human can flexibly attend to a variety of stimulus dimensions, including spatial location and various features such as color and direction of motion. Although the locus of spatial attention has been hypothesized to be represented by priority maps encoded in several dorsal frontal and parietal areas, it is unknown how the brain represents attended features. Here we examined the distribution and ...
متن کاملControl of spatial and feature-based attention in frontoparietal cortex.
Visual attention selects task-relevant information from scenes to help achieve behavioral goals. Attention can be deployed within multiple domains to select specific spatial locations, features, or objects. Recent evidence has shown that voluntary shifts of attention in multiple domains are consistently associated with transient increases in cortical activity in medial superior parietal lobule,...
متن کاملNeural representation of object-specific attentional priority
Humans can flexibly select locations, features, or objects in a visual scene for prioritized processing. Although it is relatively straightforward to manipulate location- and feature-based attention, it is difficult to isolate object-based selection. Because objects are always composed of features, studies of object-based selection can often be interpreted as the selection of a combination of l...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2017
ISSN: 1534-7362
DOI: 10.1167/17.10.50