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  • Title: A simple device for the reliable production of varnish-insulated, high-impedance tungsten microelectrodes.
    Author: Ciancone MT, Rebec GV.
    Journal: J Neurosci Methods; 1989 Feb; 27(1):77-9. PubMed ID: 2918754.
    Abstract:
    The construction and operation of a simple device that produces varnish-insulated, high-impedance tungsten microelectrodes for single-unit recording is described. In essence, the device operates as a high-voltage pulse generator whose output creates an arc between a fully insulated tungsten microelectrode and a polished counter-electrode. As a result, insulation is removed reliably and symmetrically from the microelectrode tip. The device is constructed with a minimal outlay of time, skill, and money.
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