Power-spectra and cross-frequency coupling changes in visual and Audio-visual acquired equivalence learning

András Puszta, Ákos Pertich, Xénia Katona, Balázs Bodosi, Diána Nyujtó, Zsófia Giricz, Gabriella Eördegh, Attila Nagy

Research output: Contribution to journalArticle

Abstract

The three phases of the applied acquired equivalence learning test, i.e. acquisition, retrieval and generalization, investigate the capabilities of humans in associative learning, working memory load and rule-transfer, respectively. Earlier findings denoted the role of different subcortical structures and cortical regions in the visual test. However, there is a lack of information about how multimodal cues modify the EEG-patterns during acquired equivalence learning. To test this we have recorded EEG from 18 healthy volunteers and analyzed the power spectra and the strength of cross-frequency coupling, comparing a unimodal visual-guided and a bimodal, audio-visual-guided paradigm. We found that the changes in the power of the different frequency band oscillations were more critical during the visual paradigm and they showed less synchronized activation compared to the audio-visual paradigm. These findings indicate that multimodal cues require less prominent, but more synchronized cortical contribution, which might be a possible biomarker of forming multimodal associations.

Original languageEnglish
Article number9444
JournalScientific reports
Volume9
Issue number1
DOIs
Publication statusPublished - Dec 1 2019

ASJC Scopus subject areas

  • General

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