Table 2.

Search strategy.

AND
NIRS concept	Oscillations concept			Filters
“Spectroscopy, NIR” [MeSH] OR NIRS OR “NIR spectroscopy” OR “Cerebral oximetry” OR “Cerebral oxygenation” OR “Cerebral oxygen saturation”	Oscillation(s) OR Fluctuation(s) OR “M-wave(s)” OR M-wave(s) OR Vasomotion OR LFO(s) OR VLFO(s)	OR	Fourier OR Wavelet OR “Transfer function” OR Transform AND Amplitude(s) OR Gain OR “PSD” OR PSD OR Phase(s) OR Phase shift OR WPCO	Humans [MeSH terms] AND Adults [MeSH terms] AND English language [MeSH terms]