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. 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

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Related terms: high-pass filtering, low-pass filtering, wavelet, temporal filtering

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