Flexible polymer substrate and tungsten microelectrode array for an implantable neural recording system.
This paper describes the process flow and testing of a substrate for a fully implantable neural recording system. Tungsten microwires are hybrid-packaged on a micromachined flexible polymer substrate forming an intracortical microelectrode array for brain machine interfaces. The microelectrode array is characterized on the bench top and tested in vivo. The microelectrode noise floor is less than 2 microV and acute recording results show a signal to noise ratio of 9.9-17.3 dB. The technique of hybrid fabrication of the electrodes on a flexible substrate provides a general platform for the development of an implantable neural recording system.
Patrick
Erin
E
Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611, USA. ee1@ufl.edu
Sankar
Viswanath
V
Rowe
William
W
Yen
Sheng-Feng
SF
Sanchez
Justin C
JC
Nishida
Toshikazu
T
D000465:Algorithms; D000818:Animals; D001672:Biocompatible Materials; D004566:Electrodes; D004567:Electrodes, Implanted; D004594:Electrophysiology / Q000295:instrumentation* / Q000379:methods*; D004867:Equipment Design; D006801:Humans; D008297:Male; D008904:Miniaturization; D015233:Models, Statistical; D011108:Polymers / Q000737:chemistry*; D051381:Rats; D017207:Rats, Sprague-Dawley; D014414:Tungsten / Q000737:chemistry
D001672:Biocompatible Materials; D011108:Polymers; D014414:Tungsten