Single‐trial regression of spatial exploration behavior indicates posterior EEG alpha modulation to reflect egocentric coding

dc.contributor.authorGehrke, Lukas
dc.contributor.authorGramann, Klaus
dc.date.accessioned2022-03-31T11:18:30Z
dc.date.available2022-03-31T11:18:30Z
dc.date.issued2021-03-11
dc.date.updated2022-03-21T09:55:39Z
dc.description.abstractLearning to navigate uncharted terrain is a key cognitive ability that emerges as a deeply embodied process, with eye movements and locomotion proving most useful to sample the environment. We studied healthy human participants during active spatial learning of room‐scale virtual reality (VR) mazes. In the invisible maze task, participants wearing a wireless electroencephalography (EEG) headset were free to explore their surroundings, only given the objective to build and foster a mental spatial representation of their environment. Spatial uncertainty was resolved by touching otherwise invisible walls that were briefly rendered visible inside VR, similar to finding your way in the dark. We showcase the capabilities of mobile brain/body imaging using VR, demonstrating several analysis approaches based on general linear models (GLMs) to reveal behavior‐dependent brain dynamics. Confirming spatial learning via drawn sketch maps, we employed motion capture to image spatial exploration behavior describing a shift from initial exploration to subsequent exploitation of the mental representation. Using independent component analysis, the current work specifically targeted oscillations in response to wall touches reflecting isolated spatial learning events arising in deep posterior EEG sources located in the retrosplenial complex. Single‐trial regression identified significant modulation of alpha oscillations by the immediate, egocentric, exploration behavior. When encountering novel walls, as well as with increasing walking distance between subsequent touches when encountering novel walls, alpha power decreased. We conclude that these oscillations play a prominent role during egocentric evidencing of allocentric spatial hypotheses.en
dc.description.sponsorshipBMBF, 01GQ1511, D-USA Verbund: Neuronale Grundlagen aktiver Navigationen
dc.identifier.eissn1460-9568
dc.identifier.issn0953-816X
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/16630
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-15407
dc.language.isoenen
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
dc.rights
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc610 Medizin und Gesundheitde
dc.subject.otherelectroencephalogramen
dc.subject.othermobile brain/body imagingen
dc.subject.othersingle‐trial regressionen
dc.subject.otherspatial cognitionen
dc.subject.othervirtual realityen
dc.titleSingle‐trial regression of spatial exploration behavior indicates posterior EEG alpha modulation to reflect egocentric codingen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1111/ejn.15152en
dcterms.bibliographicCitation.issue12en
dcterms.bibliographicCitation.journaltitleEuropean Journal of Neuroscienceen
dcterms.bibliographicCitation.originalpublishernameWileyen
dcterms.bibliographicCitation.originalpublisherplaceNew York, NYen
dcterms.bibliographicCitation.pageend8335en
dcterms.bibliographicCitation.pagestart8318en
dcterms.bibliographicCitation.volume54en
tub.accessrights.dnbfreeen
tub.affiliationFak. 5 Verkehrs- und Maschinensysteme>Inst. Psychologie und Arbeitswissenschaft>FG Biopsychologie und Neuroergonomiede
tub.affiliation.facultyFak. 5 Verkehrs- und Maschinensystemede
tub.affiliation.groupFG Biopsychologie und Neuroergonomiede
tub.affiliation.instituteInst. Psychologie und Arbeitswissenschaftde
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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