Band-pass filtering
Definition: A band-pass filter is a combination of a low-pass and a high-pass filter and has the effect of attenuating frequencies above and below the passband frequencies. In the context of fNIRS, band-pass filtering is used as a signal processing step to reduce undesired fNIRS signal frequency components that are irrelevant to the brain functions of interest, i.e. task or stimulus evoked hemodynamic responses or resting-state hemodynamics.
Alternative definition:
Synonym: filtering
References: https://doi.org/10.3389/fnhum.2019.00331
https://doi.org/10.1542/peds.2015-2326
http://dx.doi.org/10.1136/adc.76.2.151
https://doi.org/10.3389/fnhum.2013.00864
Related terms: high-pass filtering, low-pass filtering, wavelet, temporal filtering