Models of attention

Attention: Models

Our sensory environment is represented in the cortex as the electrical activity of billions of neurons. The neural activity in the visual pathway reflects not only the current visual environment but also the goals and expectations of the organism as well. Suppose that one is at the airport picking up a friend who is wearing a red coat. In general, red objects will activate specific neurons in t...

Bayesian Models of Attention

Computational models of attention

A large body of psychophysical evidence on attention can be summarized by postulating two forms of visual attention (James, 1890/1981). The first is driven by the visual input; this so-called exogenous, bottom-up, stimulus-driven, or saliency-based form of attention is rapid, operates in parallel throughout the entire visual field, and helps mediate pop-out, the phenomenon by which some visual ...

Models of Overt Attention

Formal models of overt attention have played an important role in motivating and interpreting studies of visual search and other tasks. This chapter briefly summarizes some general principles of attention, some general distinctions between models of overt attention, and some examples of existing models of overt attention in visual search, reading, free viewing, and interactive behaviors. Althou...

Computational models of visual attention

http://dx.doi.org/10.1016/j.visres.2015.09.007 0042-6989/ 2015 Elsevier Ltd. All rights reserved. Visual attention has been the topic of intensive research in the last three decades. Computational approaches to study vision and cognition aim at precisely specifying theories and mechanisms, generating testable quantitative predictions and bridging behavioral and physiological approaches. In the ...