A computing device-controlled system is described for the generation of amplitude-modulated pulse-width modulation (AMPWM) signals for use in treating neurological dysfunction via cranial neurostimulation, where the AMPWM signal is specifically designed to minimize the electrical impedance of the tissues...http://www.google.com.au/patents/US20040002635?utm_source=gb-gplus-sharePatent US20040002635 - Method and apparatus for utilizing amplitude-modulated pulse-width modulation signals for neurostimulation and treatment of neurological disorders using electrical stimulation
