NDLI: Design and performance of a multichannel vestibular prosthesis that restores semicircular canal sensation in rhesus monkey

Content Provider	IEEE Xplore Digital Library
Author	Chiang, B. Fridman, G.Y. Chenkai Dai Rahman, M.A. Della Santina, C.C.
Copyright Year	2001
Abstract	In normal individuals, the vestibular labyrinths sense head movement and mediate reflexes that maintain stable gaze and posture. Bilateral loss of vestibular sensation causes chronic disequilibrium, oscillopsia, and postural instability. We describe a new multichannel vestibular prosthesis (MVP) intended to restore modulation of vestibular nerve activity with head rotation. The device comprises motion sensors to measure rotation and gravitoinertial acceleration, a microcontroller to calculate pulse timing, and stimulator units that deliver constant-current pulses to microelectrodes implanted in the labyrinth. This new MVP incorporates many improvements over previous prototypes, including a 50% decrease in implant size, a 50% decrease in power consumption, a new microelectrode array design meant to simplify implantation and reliably achieve selective nerve-electrode coupling, multiple current sources conferring ability to simultaneously stimulate on multiple electrodes, and circuitry for in vivo measurement of electrode impedances. We demonstrate the performance of this device through in vitro bench-top characterization and in vivo physiological experiments with a rhesus macaque monkey.
Sponsorship	IEEE Engineering in Medicine and Biology Society
Page Count	11
File Size	1183178
Starting Page	588
Ending Page	598
File Format	PDF
ISSN	15344320
Volume Number	19
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrodes Prosthetics Three dimensional displays Arrays Sensors Acceleration Microcontrollers sensory neural prosthesis Neural engineering semicircular canal implant
Content Type	Text
Resource Type	Article
Subject	Neuroscience Rehabilitation Internal Medicine Biomedical Engineering Computer Science Applications

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