Abstract: A method for measuring a physiological parameter, such as a biological rhythm, on the basis of at least two sensors, and to an associated measurement device. The method includes the following steps of: measuring the physiological parameter for each sensor, allowing the generation of a series of measurements of at least two values; evaluating the level of consistency of each value from the measurement series; selecting a value from the set of values in the series as a function of the corresponding level of consistency and a so-called reference value, in order to determine a new reference value; and storing the new reference value.