A miniaturized neuroprosthesis suitable for implantation into the brain
| Autor: | T. Johnson, L. Del Castillo, M. Mojarradi, Benjamin J. Blalock, N. Ulshoefer, David M. Binkley, Richard A. Andersen |
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| Rok vydání: | 2003 |
| Předmět: |
Engineering
Neuroprosthetics Preamplifier Biomedical Engineering Action Potentials Integrated circuit Prosthesis Design Signal law.invention law Internal Medicine Electronic engineering Electrode array Nanotechnology Telemetry Cerebral Cortex Neurons Miniaturization Amplifiers Electronic business.industry Neural Prosthesis General Neuroscience Rehabilitation Electrical engineering Micropower Prostheses and Implants Electrodes Implanted Equipment Failure Analysis CMOS business Microelectrodes Analog-Digital Conversion |
| Zdroj: | IEEE Transactions on Neural Systems and Rehabilitation Engineering. 11:38-42 |
| ISSN: | 1558-0210 1534-4320 |
| Popis: | This paper presents current research on a miniaturized neuroprosthesis suitable for implantation into the brain. The prosthesis is a heterogeneous integration of a 100-element microelectromechanical system (MEMS) electrode array, front-end complementary metal-oxide-semiconductor (CMOS) integrated circuit for neural signal preamplification, filtering, multiplexing and analog-to-digital conversion, and a second CMOS integrated circuit for wireless transmission of neural data and conditioning of wireless power. The prosthesis is intended for applications where neural signals are processed and decoded to permit the control of artificial or paralyzed limbs. This research, if successful, will allow implantation of the electronics into the brain, or subcutaneously on the skull, and eliminate all external signal and power wiring. The neuroprosthetic system design has strict size and power constraints with each of the front-end preamplifier channels fitting within the 400 /spl times/ 400-/spl mu/m pitch of the 100-element MEMS electrode array and power dissipation resulting in less than a 1/spl deg/C temperature rise for the surrounding brain tissue. We describe the measured performance of initial micropower low-noise CMOS preamplifiers for the neuroprosthetic. |
| Databáze: | OpenAIRE |
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