The neuronal basis of attention: rate versus synchronization modulation

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Buehlmann A, Deco G. The Neuronal Basis of Attention: Rate versus Synchronization Modulation. J. Neurosci. 2008; 28(30): 7679-86. DOI: 10.1523/​JNEUROSCI.5640-07.2008
http://hdl.handle.net/10230/16660
To cite or link this document: http://hdl.handle.net/10230/16660
dc.contributor.author Buehlmann, Andrés
dc.contributor.author Deco, Gustavo
dc.date.accessioned 2012-07-05T06:53:45Z
dc.date.available 2012-07-05T06:53:45Z
dc.date.issued 2008
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.5640-07.2008
dc.identifier.issn 0270-6474
dc.identifier.uri http://hdl.handle.net/10230/16660
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.language.iso eng
dc.publisher Society for Neuroscience
dc.rights (c) 2008, Society for Neuroscience. The published version is available at: http://www.jneurosci.org/content/28/30/7679
dc.subject.other Xarxes neuronals (Neurobiologia)
dc.subject.other Percepció
dc.title The neuronal basis of attention: rate versus synchronization modulation
dc.type info:eu-repo/semantics/article
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.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion


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