Feature-based attention elicits surround-suppression in color space
نویسندگان
چکیده
منابع مشابه
Feature-Based Attention Elicits Surround Suppression in Feature Space
It is known that focusing attention on a particular feature (e.g., the color red) facilitates the processing of all objects in the visual field containing that feature [1-7]. Here, we show that such feature-based attention not only facilitates processing but also actively inhibits processing of similar, but not identical, features globally across the visual field. We combined behavior and elect...
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Stimuli appearing in the surround of the classical receptive field (CRF) can reduce neuronal firing and perceived contrast of a preferred stimulus in the CRF, a phenomenon referred to as surround suppression. Suppression is greatest when the surrounding stimulus has the same orientation and spatial frequency (SF) as the central target. Although spatial attention has been shown to influence surr...
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Attending to a feature enhances visual processing of that feature, but it is less clear what occurs to unattended features. Single-unit recording studies in middle temporal (MT) have shown that neuronal modulation is a monotonic function of the difference between the attended and neuron's preferred direction. Such a relationship should predict a monotonic suppressive effect in psychophysical pe...
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The oculomotor system utilizes color extensively for planning saccades. Therefore, we examined how the oculomotor system actually encodes color and several factors that modulate these representations: attention-based surround suppression and inherent biases in selecting and encoding color categories. We measured saccade trajectories while human participants performed a memory-guided saccade tas...
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This special issue of Journal of Vision is devoted to ‘‘Crowding,’’ a failure of object recognition. An object is ‘‘crowded’’ when clutter jumbles its appearance, making it impossible to identify. Clutter impairs perception of objects. As every child knows, Waldo is hard to find. Long-range effects of non-overlapping distractors can alter the appearance of an object, making it unrecognizable. A...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2014
ISSN: 1534-7362
DOI: 10.1167/14.10.21