Blood volume pulse

Definition: The blood volume pulse is the change in volume of blood over a given period of time. Also described as the pulsatile component of the blood pressure, i.e. the wave between systolic and diastolic blood-pressure. For fNIRS signals it should be apparent in the frequency range of the heart rate consisting of the blood volume pulse (BVP), i.e. a signal change with a specific shape. The BVP is mainly caused by the vascular blood volume increase during systole. The shape of the BVP depends on several factors, including the vascular blood volume content, the vascular compliance and resistance.

Alternative definition:

Synonym:

References: https://doi.org/10.1186/s13054-018-2171-1

Related terms: Heart Rate Variability (HRV), blood flow