This review focuses on covert attention and how it alters early vision. I explain why attention
is considered a selective process, the constructs of covert attention, spatial endogenous and …

Five important trends have emerged from recent work on computational models of focal
visual attention that emphasize the bottom-up, image-based control of attentional …

A new bottom-up visual saliency model, Graph-Based Visual Saliency (GBVS), is proposed.
It consists of two steps: rst forming activation maps on certain feature channels, and then …

Visual processing in cortex is classically modeled as a hierarchy of increasingly
sophisticated representations, naturally extending the model of simple to complex cells of …

Most models of visual search, whether involving overt eye movements or covert shifts of
attention, are based on the concept of a saliency map, that is, an explicit two-dimensional …

Most of our knowledge about the functional organization of neuronal systems is based on
the analysis of the firing patterns of individual neurons that have been recorded one by one …

How the brain encodes information in population activity, and how it combines and
manipulates that activity as it carries out computations, are questions that lie at the heart of …

Does attention alter appearance? This critical issue, debated for over a century, remains
unsettled. From psychophysical evidence that covert attention affects early vision—it …

▪ Abstract Single-unit recording studies in the macaque have carefully documented the
modulatory effects of attention on the response properties of visual cortical neurons …

Traditional explanations of multistable visual phenomena (eg ambiguous figures, perceptual
rivalry) suggest that the basis for spontaneous reversals in perception lies in antagonistic …