J. S. Pezaris, M. Sahani, and R. A. Andersen, Tetrodes for Monkeys, CNS*95, Monterey, California, July 12-16, 1995. We have adapted the McNaughton-Wilson tetrode for use in monkey cortex. Eleven penetrations have been made over macaque area MT to evaluate the mechanical and electrical properties of our design. Experiments have been made with 15 and 25 micron insulated nichrome wire running through oil-filled 33 gauge stainless steel guide tubes. Electrically, the tetrodes compare favorably with traditional tungsten electrodes for single-unit isolation, and are superior for multi-unit recordings. Preliminary histology shows straight tracks at up to 12 mm tetrode extension.
TETRODES FOR MONKEYS
J. S. Pezaris, M. Sahani, R. A. AndersenDivision of Biology
Computation and Neural Systems
California Institute of Technology, Pasadena, CA 91125, U.S.A.
Abstract
John Pezaris
Caltech
Mail Code 216-76
Pasadena, CA 91125
pz@caltech.edu 17 September 1995