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