 |
| Research article summary (published 30 Sep 2006): |
Attention in natural scenes: Neurophysiological and computational bases.
Full Abstract
How does attention operate in natural scenes? We show that the receptive fields of inferior temporal cortex neurons that implement object representations become small and located at the fovea in complex natural scenes. This facilitates the readout of information about an object that may be reward or punishment associated, and may be the target for action. Top-down biased competition to implement attention has a much weaker effect in complex natural scenes than in otherwise blank scenes with two objects. Part of the solution to the binding problem is thus that competition and the foveal cortical magnification factor emphasize what is present at the fovea, and limit the binding problem. Part of the solution to the binding problem is that neurons respond to combinations of features present in the correct relative spatial positions. Stimulus-dependent neuronal synchrony does not appear to be quantitatively important in feature binding, and in attention, in natural visual scenes, at least in the inferior temporal visual cortex, as shown by information theoretic analyses. The perception of multiple objects in a scene is facilitated by the fact that inferior temporal visual cortex neurons have asymmetrical receptive fields with respect to the fovea in complex scenes. Computational models of this processing are described.
Author information
Author/s: Rolls, Edmund T (ET); Deco, Gustavo (G);
Affiliation: University of Oxford, Department of Experimental Psychology, South Parks Road, Oxford OX1 3UD, United Kingdom. Edmund.Rolls(-atsign-)psy.ox.ac.uk
Grants: (Agency:Wellcome Trust)
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't
Journal: Neural networks : the official journal of the International Neural Network Society (Neural Netw), published in United States. (Language: eng)
Reference: 2006-Nov; vol 19 (issue 9) : pp 1383-94
Dates: Created 2006/11/13; Completed 2007/03/02; Revised 2008/11/21;
PMID: 17011749, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
External Links for this article
(including full text providers, if available):
Click Electronic Full-text Provider Links to see options for finding the electronic full text links to this article. Note there may be a subscription or fee required for access to the full text. See our FAQ for information on finding FREE full text articles.
This article may also be located in paper journal collections available in many libraries. Use the Journal and Publication Information above to find the full article.
MeSH headings (categories)
This article was linked to the MESH Headings shown below.
Related articles
These are the highest related articles currently in the database:
Related Article Map
9/5/2001
9/5/2001
Higher Relevance Score (1)
Lower Relevance Score (1)
Legend: 
- FREE Full text Article. 
- Abstract only. - Title only. More help.
See a large map of 100+ related articles.