| 主权项 |
1. A system for recording electroneurographic activity, comprising:
at least three electrodes, adapted to be placed along the longitudinal orientation of a peripheral nerve, said electrodes including end electrodes and a center electrode positioned between the end electrodes, the electrodes being capable of sensing a nerve signal, the end electrodes being connected to each other; a control device comprising at least one circuit and being configured to measure a differential interference voltage between the end electrodes, receive and process the sensed nerve activity between the center electrode and one or more of the end electrodes, and produce a control signal in response thereto for controlling an external device; a regulated bipolar current or voltage source that, based on the differential measured interference voltage between the end electrodes, applies a corresponding differential voltage or current of reverse polarity to the end electrodes to cancel the interference voltage, between the end electrodes without canceling nerve signals measured between the center electrode and one or more of the end electrodes such that the system actively rejects signals originating from biological interference sources that are separate from the sensed nerve signal without affecting a measurement of electroneurographic activity. |
