CHRONICALLY IMPLANTABLE HYBRID CANNULA-MICROELECTRODE SYSTEM FOR CONTINUOUS MONITORING ELECTROPHYSIOLOGICAL SIGNALS DURING INFUSION OF A CHEMICAL OR PHARMACEUTICAL AGENT

摘要

A device for assessing the effects of diffusible molecules on electrophysiological recordings from multiple neurons allows for the infusion of reagents through a cannula located among an array of microelectrodes. The device can easily be customized to target specific neural structures. It is designed to be chronically implanted so that isolated neural units and local field potentials are recorded over the course of several weeks or months. Multivariate statistical and spectral analysis of electrophysiological signals acquired using this system could quantitatively identify electrical “signatures” of therapeutically useful drugs.