Design, Fabrication, and In Vivo Behavior of Chronic Recording Intracortical Microelectrodes

A platinum-glass microelectrode has been developed that permits chronic recording from single cortical neurons in unrestrained animals and without benefit of external manipulation. Details of fabrication and the surgical technique involved are presented. A discussion of the relevant mechanical considerations is also included. A prime advantage of the method is the ease with which it may be realized in the standard neurophysiologic laboratory.