Show Reference: "Feature-based attention in visual cortex"

Feature-based attention in visual cortex Trends in Neurosciences, Vol. 29, No. 6. (June 2006), pp. 317-322, doi:10.1016/j.tins.2006.04.001 by John H. Maunsell, Stefan Treue
    abstract = {Although most studies of visual attention have examined the effects of shifting attention between different locations in the visual field, attention can also be directed to particular visual features, such as a color, orientation or a direction of motion. Single-unit studies have shown that attention to a feature modulates neuronal signals in a range of areas in monkey visual cortex. The location-independent property of feature-based attention makes it particularly well suited to modify selectively the neural representations of stimuli or parts within complex visual scenes that match the currently attended feature. This review is part of the {TINS} special issue on The Neural Substrates of Cognition.},
    address = {HHMI and Baylor College of Medicine, Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza S-603, Houston, TX 77030, USA.},
    author = {Maunsell, John H. and Treue, Stefan},
    doi = {10.1016/j.tins.2006.04.001},
    issn = {0166-2236},
    journal = {Trends in Neurosciences},
    keywords = {attention, biology, feature-attention, visual},
    month = jun,
    number = {6},
    pages = {317--322},
    pmid = {16697058},
    posted-at = {2014-04-09 17:25:56},
    priority = {2},
    title = {Feature-based attention in visual cortex},
    url = {},
    volume = {29},
    year = {2006}

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Feature-based and spatial attention may be based on similar mechanisms.

Feature-based visual attention facilitates object detection across the visual field.

The effects of visual attention are more pronounced in later stages of visual processing (in the visual cortex).

Spatial attention does not seem to affect the selectivity of visual neurons—just the vigour of their response.

Spatial visual attention increases the activity of neurons in the visual cortex whose receptive fields overlap the attended region.

Feature-based visual attention increases the activity of neurons in the visual cortex which respond to the attended feature.

Spatial and feature-based visual attention are additive: together, they particularly enhance the activity of any neuron whose receptive field encompasses the attended region, contains a stimulus with the attended feature, and prefers that feature.