Probing cortical excitability using rapid frequency tagging


Frequency tagging has been widely used to study the role of visual selective attention. Presenting a visual stimulus flickering at a specific frequency generates so-called steady-state visually evoked responses. However, frequency tagging is mostly done at lower frequencies (<30 Hz). This produces a visible flicker, potentially interfering with both perception and neuronal oscillations in the theta, alpha and beta band. To overcome these problems, we used a newly developed projector with a 1440 Hz refresh rate allowing for frequency tagging at higher frequencies. We asked participants to perform a cued spatial attention task in which imperative pictorial stimuli were presented at 63 Hz or 78 Hz while measuring whole-head magnetoencephalography (MEG). We found posterior sensors to show a strong response at the tagged frequency. Importantly, this response was enhanced by spatial attention. Furthermore, we reproduced the typical modulations of alpha band oscillations, i.e., decrease in the alpha power contralateral to the attentional cue. The decrease in alpha power and increase in frequency tagged signal with attention correlated over subjects. We hereby provide proof-of-principle for the use of high-frequency tagging to study sensory processing and neuronal excitability associated with attention.

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Divisions: College of Engineering & Physical Sciences > School of Engineering and Technology > Mechanical, Biomedical & Design
College of Engineering & Physical Sciences > School of Engineering and Technology
Additional Information: Copyright © 2019 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license ( Funding Information: This work was supported by the James S. McDonnell Foundation Understanding Human Cognition Collaborative Award (grant number 220020448) to O.J.; Wellcome Trust Investigator Award in Science (grant number 207550) to O.J.; the BBSRC grant (BB/R018723/1BB/ R018723/1) to O.J; Royal Society Wolfson Research Merit Award to O.J.
Publication ISSN: 1095-9572
Last Modified: 18 Jun 2024 07:45
Date Deposited: 09 Jun 2023 15:10
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Related URLs: https://www.sci ... 053811919302563 (Publisher URL)
PURE Output Type: Article
Published Date: 2019-07-15
Published Online Date: 2019-03-28
Accepted Date: 2019-03-25
Authors: Zhigalov, Alexander (ORCID Profile 0000-0002-3359-5093)
Herring, J.D.
Herpers, J.
Bergmann, T.O.
Jensen, O



Version: Published Version

License: Creative Commons Attribution

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