Multisite Microelectrodes for Use in Human Deep Brain Stimulation

Abstract

This study describes a novel multisite recording probe with linear arrangement of recording sites. It is build from a 30cm long, 650µm diameter stainless steel rod featuring 31 microelectrodes on the side of its business end and a conical tip. Recording sites are gold plated and have a complex impedance in saline of few hundred kOhm. It is manufactured by precision mechanics and connected with a low-noise multichannel amplifier to a medical grade recording setup. While mounted to a standard stereotaxic frame its movement in z-direction is controlled with a proven rubber motor. Preliminary recordings from anesthetized ferret's cortex show its ability to record both Local Field Potentials and Multi Unit Activity of neurons across different layers.

Multimodal, Multisite Neuronal Recordings for Brain Research

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