Direct inductive stimulation for energy-efficient wireless neural interfaces.
Advanced neural stimulator designs consume power and produce unwanted thermal effects that risk damage to surrounding tissue. In this work, we present a simplified architecture for wireless neural stimulators that relies on a few circuit components including an inductor, capacitor and a diode to elicit an action potential in neurons. The feasibility of the design is supported with analytical models of the inductive link, electrode, electrolyte, membrane and channels of neurons. Finally, a flexible implantable prototype of the design is fabricated and tested in vitro on neural tissue.
Department of Bioengineering, University of California, San Diego, La Jolla, CA, USA.
Sohmyung
S
Ha
Massoud L
ML
Khraiche
Gabriel A
GA
Silva
Gert
G
Cauwenberghs
D000818:Animals; D004599:Electric Stimulation Therapy / Q000295:instrumentation* / Q000379:methods*; D006801:Humans; D016571:Neural Networks, Computer; D059015:Wireless Technology / Q000295:instrumentation*