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http://hdl.handle.net/2445/69709
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DC Field | Value | Language |
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dc.contributor.author | Supèr, Hendrik Anne | - |
dc.contributor.author | Romeo Val, August | - |
dc.date.accessioned | 2016-02-22T14:37:36Z | - |
dc.date.available | 2016-02-22T14:37:36Z | - |
dc.date.issued | 2011 | - |
dc.identifier.issn | 1932-6203 | - |
dc.identifier.uri | http://hdl.handle.net/2445/69709 | - |
dc.description.abstract | In the visual cortex, feedback projections are conjectured to be crucial in figure-ground segregation. However, the precise function of feedback herein is unclear. Here we tested a hypothetical model of reentrant feedback. We used a previous developed 2-layered feedforwardspiking network that is able to segregate figure from ground and included feedback connections. Our computer model data show that without feedback, neurons respond with regular low-frequency (~9 Hz) bursting to a figure-ground stimulus. After including feedback the firing pattern changed into a regular (tonic) spiking pattern. In this state, we found an extra enhancement of figure responses and a further suppression of background responses resulting in a stronger figure-ground signal. Such push-pull effect was confirmed by comparing the figure-ground responses withthe responses to a homogenous texture. We propose that feedback controlsfigure-ground segregation by influencing the neural firing patterns of feedforward projecting neurons. | - |
dc.format.extent | 7 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Public Library of Science (PLoS) | - |
dc.relation.isformatof | Reproducció del document publicat a: http://dx.doi.org/10.1371/journal.pone.0021641 | - |
dc.relation.ispartof | PLoS One, 2011, vol. 6, num. 6 | - |
dc.relation.uri | http://dx.doi.org/10.1371/journal.pone.0021641 | - |
dc.rights | cc-by (c) Supèr, Hendrik Anne et al., 2011 | - |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es | - |
dc.source | Articles publicats en revistes (Cognició, Desenvolupament i Psicologia de l'Educació) | - |
dc.subject.classification | Neurones | - |
dc.subject.classification | Còrtex visual | - |
dc.subject.classification | Cognició | - |
dc.subject.other | Neurons | - |
dc.subject.other | Visual cortex | - |
dc.subject.other | Cognition | - |
dc.title | Feedback enhances feedforward figure-ground segmentation by changing firing mode | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 615798 | - |
dc.date.updated | 2016-02-22T14:37:36Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
dc.identifier.pmid | 21738747 | - |
Appears in Collections: | Articles publicats en revistes (Cognició, Desenvolupament i Psicologia de l'Educació) |
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615798.pdf | 443.27 kB | Adobe PDF | View/Open |
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