The neuronal basis of attention: rate versus synchronization modulation
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- dc.contributor.author Buehlmann, Andrésca
- dc.contributor.author Deco, Gustavoca
- dc.date.accessioned 2012-07-05T06:53:45Z
- dc.date.available 2012-07-05T06:53:45Z
- dc.date.issued 2008ca
- dc.description.abstract Extensive theoretical and experimental work on the neuronal correlates of visual attention raises two hypotheses about the underlying mechanisms. The first hypothesis, named biased competition, originates from experimental single-cell recordings that have shown that attention upmodulates the firing rates of the neurons encoding the attended features and downregulates the firing rates of the neurons encoding the unattended features. Furthermore, attentional modulation of firing rates increases along the visual pathway. The other, newer hypothesis assigns synchronization a crucial role in the attentional process. It stems from experiments that have shown that attention modulates gamma-frequency synchronization. In this paper, we study the coexistence of the two phenomena using a theoretical framework. We find that the two effects can vary independently of each other and across layers. Therefore, the two phenomena are not concomitant. However, we show that there is an advantage in the processing of information if rate modulation is accompanied by gamma modulation, namely that reaction times are shorter, implying behavioral relevance for gamma synchronization.
- dc.format.mimetype application/pdfca
- dc.identifier.citation Buehlmann A, Deco G. The Neuronal Basis of Attention: Rate versus Synchronization Modulation. J. Neurosci. 2008; 28(30): 7679-86. DOI: 10.1523/JNEUROSCI.5640-07.2008ca
- dc.identifier.doi http://dx.doi.org/10.1523/JNEUROSCI.5640-07.2008
- dc.identifier.issn 0270-6474ca
- dc.identifier.uri http://hdl.handle.net/10230/16660
- dc.language.iso engca
- dc.publisher Society for Neuroscienceca
- dc.relation.ispartof Journal of Neuroscience. 2008;28(30):7679-86
- dc.rights © 2008, Society for Neuroscience. The published version is available at: http://www.jneurosci.org/content/28/30/7679ca
- dc.rights.accessRights info:eu-repo/semantics/openAccess
- dc.subject.keyword Computational
- dc.subject.keyword Model
- dc.subject.keyword Attention
- dc.subject.keyword Gamma
- dc.subject.keyword Synchronization
- dc.subject.keyword Visual
- dc.subject.other Xarxes neuronals (Neurobiologia)
- dc.subject.other Percepció
- dc.title The neuronal basis of attention: rate versus synchronization modulationca
- dc.type info:eu-repo/semantics/articleca
- dc.type.version info:eu-repo/semantics/publishedVersion