Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/44186
DC FieldValueLanguage
dc.contributor.authorDuarte, Isabel C.-
dc.contributor.authorCastelhano, João-
dc.contributor.authorSales, Francisco-
dc.contributor.authorCastelo-Branco, Miguel-
dc.date.accessioned2017-10-26T14:47:22Z-
dc.date.available2017-10-26T14:47:22Z-
dc.date.issued2016-06-27-
dc.identifier.issn2162-3279por
dc.identifier.urihttp://hdl.handle.net/10316/44186-
dc.description.abstractHippocampal oscillations have been regularly described as playing a dominant role in spatial memory and navigation in rodents. In humans, the relative role of anterior versus posterior rhythms during navigational memory is not established.Here, we tested this hypothesis using direct brain ECoG recordings in the anterior and posterior hippocampus of a patient, in a navigational task requiring spatial memory. We assessed multiple oscillatory bands during encoding and retrieval phases. We found navigation related 1–3.5 Hz activity during retrieval, both in the anterior and posterior hippocampus. Activity between 4 and 8 Hz was identified during both encoding and retrieval, only in the anterior hippocampus. Our findings are consistent with the view that an anterior/posterior functional gradient is present in the hippocampus, and involves two distinct neuronal networks, supporting either encoding or retrieval processes. Although this is a single case scenario, these findings suggest that neural oscillations during spatial navigation do vary across hippocampal subregions, as a function of encoding versus retrieval processes during the mnemonic process. In this single case study, the results point to the presence of a dual involvement of multiple frequency bands across hippocampal subregions during encoding and retrieval. Although these results need generalization, they provide a new perspective on distinct physiological properties of the anterior and posterior hippocampus in human spatial navigation during encoding and retrieval.por
dc.language.isoengpor
dc.publisherWiley Online Librarypor
dc.relationCENTRO-07-ST24-FEDER-00205por
dc.relationUID/NEU/04539/2013-2020por
dc.relationBial 132/133por
dc.rightsopenAccesspor
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/por
dc.subjectdeltapor
dc.subjecthippocampuspor
dc.subjectelectrocorticographypor
dc.subjectthetapor
dc.subjectoscillationspor
dc.titleThe anterior versus posterior hippocampal oscillations debate in human spatial navigation: evidence from an electrocorticographic case studypor
dc.typearticle-
degois.publication.firstPagee00507por
degois.publication.issue9por
degois.publication.titleBrain and Behaviorpor
dc.relation.publisherversionhttp://onlinelibrary.wiley.com/doi/10.1002/brb3.507/fullpor
dc.peerreviewedyespor
dc.identifier.doi10.1002/brb3.507por
dc.identifier.doi10.1002/brb3.507-
degois.publication.volume6por
uc.controloAutoridadeSim-
item.grantfulltextopen-
item.languageiso639-1en-
item.fulltextCom Texto completo-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.deptFaculty of Medicine-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitMARE - Marine and Environmental Sciences Centre-
crisitem.author.researchunitCIBIT - Coimbra Institute for Biomedical Imaging and Translational Research-
crisitem.author.orcid0000-0002-5620-2424-
crisitem.author.orcid0000-0002-8996-1515-
crisitem.author.orcid0000-0003-4364-6373-
Appears in Collections:I&D ICNAS - Artigos em Revistas Internacionais
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