Abstract

J. Lu, L. Itti, Perceptual Consequences of Feature-Based Attention, Journal of Vision, Vol. 5, No. 7, pp. 622-631, Aug 2005. [2005 impact factor: 3.469] (Cited by 38)

Abstract: Attention modulates visual processing along at least two dimensions: A spatial dimension which enhances the representation of stimuli within the focus of attention, and a feature dimension thought to enhance attended visual features, for example upward motion, throughout the visual field. We investigate the consequences of feature-based attention onto visual perception, using dual-task human psychophysics and two distant drifting Gabor stimuli to systematically explore 64 combinations of visual features (orientations and drift speeds) and tasks (discriminating orientation or drift speed). The resulting single, consistent dataset suggests a functional model, which predicts a maximum-rule by which only the dominant product of feature enhancement and feature benefit by feature relevance may benefit perception.

Themes: Model of Top-Down Attentional Modulation, Human Psychophysics