Patent Document ID: 20070225765
Application ID: 11277207
Patent Flag: 0

Claim One:
1. An apparatus including at least two electrodes for inducing action potentials at an adjustable locus of electrically excitable tissue of an organism, comprising in combination: a first electrode selected from the at least two electrodes, the first electrode capable of being driven with a first pulse, the first pulse having a pulse parameter to generate a first action potential area and a first subthreshold potential area; a second electrode selected from the at least two electrodes, the second electrode capable of being driven with a second pulse, the second pulse having a pulse parameter to generate a second action potential area and a second subthreshold potential area; and a generator configured to provide the first and second pulses to the first and second electrodes to create a steerable electric field, the generator providing substantially non-simultaneous pulses to the first and second electrodes and wherein the superposition of the first subthreshold potential area with the second subthreshold potential area results in a deep tissue suprathreshold potential area of the adjustable locus wherein a third action potential is induced.