Name
Title | ||
|---|---|---|
A Dynamic Neural Field Approach to the Covert and Overt Deployment of Spatial Attention |
Abstract | ||
|---|---|---|
The visual exploration of a scene involves the interplay of several competing processes (for example to select the next saccade
or to keep fixation) and the integration of bottom-up (e.g. contrast) and top-down information (the target of a visual search
task). Identifying the neural mechanisms involved in these processes and in the integration of these information remains a
challenging question. Visual attention refers to all these processes, both when the eyes remain fixed (covert attention) and
when they are moving (overt attention). Popular computational models of visual attention consider that the visual information
remains fixed when attention is deployed while the primates are executing around three saccadic eye movements per second,
changing abruptly this information. We present in this paper a model relying on neural fields, a paradigm for distributed,
asynchronous and numerical computations and show that covert and overt attention can emerge from such a substratum. We identify
and propose a possible interaction of four elementary mechanisms for selecting the next locus of attention, memorizing the
previously attended locations, anticipating the consequences of eye movements and integrating bottom-up and top-down information
in order to perform a visual search task with saccadic eye movements. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1007/s12559-010-9083-y | Cognitive Computation |
Keywords | Field | DocType |
Visual attention,Eye movements,Dynamic neural fields,Emergence | Visual search,Saccadic suppression of image displacement,Computer science,Gaze-contingency paradigm,Cognitive psychology,Covert,N2pc,Eye movement,Saccadic masking,Saccade | Journal |
Volume | Issue | ISSN |
3 | 1 | 1866-9956 |
Citations | PageRank | References |
11 | 0.64 | 17 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jérémy Fix | 1 | 22 | 3.04 |
| Nicolas P. Rougier | 2 | 106 | 14.78 |
| Frédéric Alexandre | 3 | 82 | 15.94 |