Global feature-based attention for motion and color
Related Experiment Videos
Melissa Sàenz1, Giedrius T Buraĉas, Geoffrey M Boynton
1The Salk Institute for Biological Studies, Systems Neurobiology Laboratory--B, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA.
Abstract:
We used a divided attention psychophysical task to test the hypothesis that visual attention to a stimulus feature(1) facilitates the processing of other stimuli sharing the same feature. Performance on a dual-task was significantly better when human observers divided attention across two spatially separate stimuli sharing a common feature (same direction of motion or same color) compared to opposing features. This attentional effect was dependent upon the presence of competing stimuli. These results are consistent with a spatially global feature-based mechanism of attention that increases the response of cortical neurons tuned to an attended feature throughout the visual field.
Related Concept Videos
Association Areas of the Cortex
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Vision
Color Vision
Depth Perception and Spatial Vision