Electrophysiological correlates of gist perception: a steady-state visually evoked potentials study

DC FieldValueLanguage
dc.contributor.authorRadtke, Elise L.
dc.contributor.authorSchoene, Benjamin
dc.contributor.authorMartens, Ulla
dc.contributor.authorGruber, Thomas
dc.date.accessioned2021-12-23T16:06:43Z-
dc.date.available2021-12-23T16:06:43Z-
dc.date.issued2020
dc.identifier.issn00144819
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/7520-
dc.description.abstractGist perception refers to perceiving the substance or general meaning of a scene. To investigate its neuronal mechanisms, we used the steady-state visually evoked potential (SSVEP) method-an evoked oscillatory cortical response at the same frequency as a visual stimulus flickered at this frequency. Two neighboring stimuli were flickered at different frequencies f(1) and f(2), for example, a drawing of a sun on the left side of the screen flickering at 8.6 Hz and the drawing of a parasol on the right side of the screen flickering at 12 Hz. SSVEPs enabled us to separate the responses to the two distinct stimuli by extracting oscillatory brain responses at f(1) and f(2). Additionally, it allowed to investigate intermodulation frequencies, that is, the brain's response at a linear combination of f(1) and f(2) (here at f(1) f(2) = 20.6 Hz) as an indicator of processing shared aspects of the input, that is, gist perception (here: a beach scene). We recorded high-density EEG of 18 participants. Results revealed clear and separable neuronal oscillations at f(1) and f(2). Additionally, occipital electrodes showed increased amplitudes at the intermodulation frequency in related as compared to unrelated pairs. The increase in intermodulation frequency was associated with bilateral temporal and parietal lobe activation, probably reflecting the interaction of local object representations as a basis for activating the gist network. The study demonstrates that SSVEPs are an excellent method to unravel mechanisms underlying the processing within multi-stimulus displays in the context of gist perception.
dc.description.sponsorshipGerman Research FoundationGerman Research Foundation (DFG) [GR 2684/6-1]; This work was supported by a grant from the German Research Foundation (GR 2684/6-1 to Thomas Gruber and Ulla Martens).
dc.language.isoen
dc.publisherSPRINGER
dc.relation.ispartofEXPERIMENTAL BRAIN RESEARCH
dc.subjectATTENTION
dc.subjectCONTEXT
dc.subjectCORTEX
dc.subjectEEG
dc.subjectGist perception
dc.subjectINTEGRATION
dc.subjectIntermodulation frequency
dc.subjectMEMORY
dc.subjectMulti-stimulus displays
dc.subjectNEURAL SIGNATURE
dc.subjectNeurosciences
dc.subjectNeurosciences & Neurology
dc.subjectOBJECTS
dc.subjectRESPONSES
dc.subjectSteady-state visually evoked potentials
dc.subjectTOP-DOWN FACILITATION
dc.titleElectrophysiological correlates of gist perception: a steady-state visually evoked potentials study
dc.typejournal article
dc.identifier.doi10.1007/s00221-020-05819-6
dc.identifier.isiISI:000530231500001
dc.description.volume238
dc.description.issue6
dc.description.startpage1399
dc.description.endpage1410
dc.contributor.orcid0000-0001-7926-7426
dc.identifier.eissn14321106
dc.publisher.placeONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES
dcterms.isPartOf.abbreviationExp. Brain Res.
dcterms.oaStatusGreen Published, hybrid
crisitem.author.deptFB 08 - Humanwissenschaften-
crisitem.author.deptidfb08-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.netidGrTh192-
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