Beta- and gamma-band cortico-cortical interactions support naturalistic reading of continuous text

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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European Journal of Neuroscience, Volume 59, issue 2, pp. 238-251
Large-scale integration of information across cortical structures, building on neural connectivity, has been proposed to be a key element in supporting human cognitive processing. In electrophysiological neuroimaging studies of reading, quantification of neural interactions has been limited to the level of isolated words or sentences due to artefacts induced by eye movements. Here, we combined magnetoencephalography recording with advanced artefact rejection tools to investigate both cortico-cortical coherence and directed neural interactions during naturalistic reading of full-page texts. Our results show that reading versus visual scanning of text was associated with wide-spread increases of cortico-cortical coherence in the beta and gamma bands. We further show that the reading task was linked to increased directed neural interactions compared to the scanning task across a sparse set of connections within a wide range of frequencies. Together, the results demonstrate that neural connectivity flexibly builds on different frequency bands to support continuous natural reading.
Funding Information: This work was financially supported by the Academy of Finland (Grant Nos. 255349, 315553 and 355407 to RS), the Sigrid Jusélius Foundation (grant to RS), the Finnish Cultural Foundation (grant to SM) and Aalto Brain Center. We thank Antti Jalava for contributing to the design and implementation of the experimental paradigm as well as data collection. Publisher Copyright: © 2023 The Authors. European Journal of Neuroscience published by Federation of European Neuroscience Societies and John Wiley & Sons Ltd.
coherence, Granger causality, language, magnetoencephalography
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Kujala, J, Mäkelä, S, Ojala, P, Hyönä, J & Salmelin, R 2024, ' Beta- and gamma-band cortico-cortical interactions support naturalistic reading of continuous text ', European Journal of Neuroscience, vol. 59, no. 2, pp. 238-251 .