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dc.contributor.authorBrederoo, Sanne
dc.contributor.authorBos, Laura Simone
dc.contributor.authorDragoy, Olga
dc.contributor.authorBastiaanse, Roelien
dc.contributor.authorBaggio, Giosuè
dc.date.accessioned2015-05-07T07:47:04Z
dc.date.accessioned2015-05-21T08:35:59Z
dc.date.available2015-05-07T07:47:04Z
dc.date.available2015-05-21T08:35:59Z
dc.date.issued2015-04-13
dc.identifier.citationPLoS ONE 2015nb_NO
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/11250/283844
dc.description.abstractVerbs and other temporal expressions allow speakers to specify the location of events in time, as well as to move back and forth in time, shifting in a narrative between past, present and future. The referential flexibility of temporal expressions is well understood in linguistics but its neurocognitive bases remain unknown. We aimed at obtaining a neural signature of shifting times in narrative language. We recorded and analyzed event-related brain potentials (ERPs) and oscillatory responses to the adverb ‘now’ and to the second main verb in Punctual (‘An hour ago the boy stole a candy and now he peeled the fruit’) and Iterative (‘The entire afternoon the boy stole candy and now he peeled the fruit’) contexts. ‘An hour ago’ introduces a time frame that lies entirely in the past, ‘now’ shifts the narrative to the present, and ‘peeled’ shifts it back to the past. These two referential shifts in Punctual contexts are expected to leave very similar traces on neural responses. In contrast, ‘The entire afternoon’ specifies a time frame that may encompass past, present and future, such that both ‘now’ and ‘peeled’ are consistent with it. Here, no time shift is required. We found no difference in ERPs between Punctual and Iterative contexts either at ‘now’ or at the second verb. However, reference shifts modulated oscillatory signals. ‘Now’ and the second verb in Punctual contexts resulted in similar responses: an increase in gamma power with a leftanterior distribution. Gamma bursts were absent in Iterative contexts. We propose that gamma oscillations here reflect the binding of temporal variables to the values allowed by constraints introduced by temporal expressions in discourse.nb_NO
dc.language.isoengnb_NO
dc.publisherPublic Library of Sciencenb_NO
dc.titleGamma oscillations as a neural signature of shifting times in narrative languagenb_NO
dc.typeJournal articlenb_NO
dc.typePeer revieweden_GB
dc.date.updated2015-05-07T07:47:04Z
dc.source.journalPLoS ONEnb_NO
dc.identifier.doi10.1371/journal.pone.0121146
dc.identifier.cristin1238388
dc.description.localcode© 2015 Brederoo et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.nb_NO


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