Baroreceptor Sensitivity (BRS) index analysis is not built directly into the Ponemah software, but researchers can export their data that was recorded using Ponemah and perform BRS analysis.  For more background information on Baroreflex and the BRS index including analysis steps that would need to be followed see the DSI website - https://www.datasci.com/solutions/cardiovascular/baroreceptor-sensitivity-(brs)