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. 2023 Oct 24;12(10):1477–1486. doi: 10.21037/tau-23-275

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2023 Translational Andrology and Urology. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0.

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fNIRS signal filtering. (A) Raw fNIRS signal O₂Hb optical density imported from the manufacturer software (OxySoft, Artinis Medical Systems) into MATLAB (MathWorks). (B) Filtered data after applying a low pass filter (Gaussian, 1 s) to eliminate heart rate. (C) Mono-exponential curve fit for the filtered data. fNIRS, functional near infrared spectroscopy; O₂Hb, oxyhemoglobin.