Spinal evoked potentials evaluated with two relevant electrode types.
The spinal evoked potentials (SEPs) were recorded at the level of the 7th lumbar segment in five cats by stimulating the popliteal nerve separately on both sides. The recordings were performed both with silver-silver chloride cup electrodes and stainless steel needle electrodes. The shapes and latencies of the responses were highly similar, when comparing the responses recorded with the two electrode types as shown by means of transfer function: attenuation and phase curves for both electrode types are highly similar in the bandpass used in the present study. It is concluded that the properties of stainless steel needle electrodes are highly correspondent with the conventional silver-silver chloride electrodes when somatosensory evoked responses are recorded.
D000818:Animals; D002415:Cats; D004558:Electric Stimulation; D004566:Electrodes; D005071:Evoked Potentials; D008160:Lumbosacral Plexus / Q000502:physiology*; D008954:Models, Biological