Abstract
ABSTRACTNoise‐free electroencephalographic signals from the cortex of the intact dog are difficult to obtain. Recordings made with surface electrodes are contaminated by muscle artifacts because of the thick muscle overlying the skull. The usual implanted electrodes in a pedestal arrangement give excellent signals; but because the tissue never heals around the base of the pedestal, the brain becomes infected or abscessed within a few weeks. A new type low impedance electrode. Aseptically implanted, has been developed. A stainless steel screw is threaded into the skull such that the bottom of the screw is in contact with the dura. The top of the screw, when is concave, is even with hypodermic needle into the top of the screw in a plug and jack arrangement.
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