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. 2023 Apr 17;10(2):023520. doi: 10.1117/1.NPh.10.2.023520

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© 2023 The Authors

Published by SPIE under a Creative Commons Attribution 4.0 International License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Fig. 3 — The ratio of preprints to publications for each imaging modality by year. Note. This search was conducted on March 29, 2022, using Ref. 10 (for PsyArXiv) and bioRxiv; please see the Supplemental Material for more details on these searches. The following search terms were used for PsyArXiv: fNIRS or “functional near infrared spectroscopy,” fMRI or “functional magnetic resonance imaging,” EEG or electroencephalogram or ERP or “event related potential.” The following search terms were used for bioRxiv: fNIRS, fMRI, EEG, or ERP.