Disentangling the effects of near-infrared light stimulation and exercise on cognitive function in fNIRS studies.

Neuroimage

Department of Basic and Clinical Neuroscience, Psychology and Neuroscience, Institute of Psychiatry, King's College London, Denmark Hill, London SE5 8AF, UK; Instituto de Neurociencias del Principado de Asturias (INEUROPA), Oviedo 33005, Spain; Health Research Institute of the Principality of Asturi

Published: April 2024


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Article Abstract

Functional near-infrared spectroscopy (fNIRS) studies often aim to measure changes in the brain's hemodynamic response in relation to a specific intervention. We recently showed how a fNIRS device could induce photobiomodulatory effects on cognition by using its near-infrared (NIR) light. However, so far, fNIRS research has overlooked the stimulatory potential intrinsic to this technique. The work by Kuwamizu et al. (2023) on pupil dynamics during exercise is no exception. Here, we suggest a fix to their experimental design, which could be taken into account in other fNIRS studies, to guarantee an adequate level of control for possible unconsidered photobiomodulatory effects.

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http://dx.doi.org/10.1016/j.neuroimage.2024.120615DOI Listing

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