Method for performing a physiological analysis with increased reliability

摘要

A method for performing an electrophysiological analysis implemented in a system includes: a series of electrodes to be placed on different regions of the human body; a DC voltage source controlled so as to produce DC voltage pulses; a switching circuit for selectively connecting the active electrodes to the voltage source, the active electrodes forming an anode and a cathode, and for connecting at least one other high-impedance passive electrode used to measure the potential reached by the body; and a measuring circuit for reading data representative of the current in the active electrodes, and data representative of the potentials generated on at least certain high-impedance electrodes in response to the application of the pulses, the data allowing a value to be determined for the electrochemical conductance of the skin. The method also regenerates a high-impedance electrode connected to the voltage source as a cathode.

主权项

1. An electrophysiological analysis method applied in a system comprising:
a series of electrodes including active and passive electrodes configured to be placed in different regions of a human body, a DC voltage source, controlled for increasing DC voltage square wave pulses, a switching circuit selectively connecting a pair of the active electrodes to the voltage source, the active electrodes forming an anode and a cathode, and the switching circuit connecting at least one of the passive electrodes with impedance being used for measuring potential attained by the body, and a measuring circuit measuring representative data of current in the active electrodes and potentials on at least certain electrodes connected with impedance in response to the application of the square waves, the data allowing determination of a value of electrochemical conductance of skin, the method further comprising: at least one measuring step during which the adjustable voltage source applies to the anode a series of the DC voltage square waves, and during which the measuring circuit measures the data, a step prior to the measuring step, during which an electrode which is connected with impedance during the measuring step is regenerated by being connected to the voltage source as a cathode; and an intermediate step, between the regeneration step and the measuring step, during which a voltage difference is measured between a non-regenerated electrode connected with impedance and a regenerated electrode connected with impedance, the difference allowing determination of an overvoltage value at the non-regenerated electrode, and wherein, during the measuring step, the non-regenerated electrode, the overvoltage of which has been measured, is connected as an anode.