| abstract |
The invention concerns a method, a system and a device for producing, from a substance, electric signals characteristic of the biological activity of an active element contained in the substance. The method consists in: placing the substance in a zone subjected to a specific electric, magnetic and/or electromagnetic excitation field. The method further includes a step which consists in transforming the fields resulting form the interaction between the specific excitation filed and the substance, into signals, in particular electric signals, using a first transducer receiving the resulting fields. |