Trials and tribulations when attempting to decode semantic representations from MEG responses to written text

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openAccess

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Journal Title

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Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2023-06-14

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Mcode

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Language

en

Pages

12

Series

Language, Cognition and Neuroscience, articlenumber 3273798.2023.2219353

Abstract

Several studies have been published which show that it is possible to decode semantic representations directly from brain responses. This has been repeatedly successful when the stimuli used were pictures of objects. However, there is a distinct scarcity of studies decoding responses to orthographic stimuli, particularly those employing time-sensitive imaging methods. We use examples from our own research to highlight the challenges we have faced when attempting to decode semantic representations from MEG responses to written words. We discuss differences in brain responses to pictures and orthographic stimuli to determine the characteristics of the brain responses that allow for successful decoding of semantics. We suspect the limited number of published studies on this topic indicates that these challenges are not unique to our experience. By bringing attention to these issues, we hope to stimulate a new wave of discussion leading to eventual progress.

Description

Publisher Copyright: © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

Keywords

decoding, language, magnetoencephalography, Semantics, written words

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Citation

Ghazaryan, G, van Vliet, M, Saranpää, A, Lammi, L, Lindh-Knuutila, T, Hultén, A, Kivisaari, S & Salmelin, R 2023, ' Trials and tribulations when attempting to decode semantic representations from MEG responses to written text ', Language, Cognition and Neuroscience . https://doi.org/10.1080/23273798.2023.2219353