A - Human Necessities – 61 – N
Patent
A - Human Necessities
61
N
326/1
A61N 1/08 (2006.01) A61B 5/04 (2006.01) A61B 5/0484 (2006.01) A61N 1/36 (2006.01)
Patent
CA 1157526
METHOD AND APPARATUS FOR TRANSCUTANEOUS ELECTRICAL STIMULATION ABSTRACT OF THE DISCLOSURE A method and apparatus for monitoring and obtaining actual bio-electrical characteristics of a subject, such as EEG, or determinants of the psycho-electro-physiological state of the subject, under predetermined conditions of evoked response stimuli, and by interaction with a computer, apply cutaneous electrical stimulation to the subject, using a signal generator to modify current amplitude and frequency in a direction to achieve bio-electrical characteristics in the subject related to the actual bio-electrical characteristics monitored. The signal generator may have an output of several frequencies simultaneously, and uses a sinusoidal waveform output, with battery power passed through a transformer to power a transconductance amplifier to obtain constant current output despite resistance changes in the line with the subject, and with the transformer not placed in the signal path of the sinusoidal waveform.
341154
Cohen Jefferson J.
Gowling Lafleur Henderson Llp
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