Evoked potentials induced by transcranial stimulation in dogs

Karl H. Kraus From the Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211.

Search for other papers by Karl H. Kraus in
Current site
Google Scholar
PubMed
Close
 DVM, MS
,
Dennis O’Brien From the Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211.

Search for other papers by Dennis O’Brien in
Current site
Google Scholar
PubMed
Close
 DVM, PhD
,
Eric R. Pope From the Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211.

Search for other papers by Eric R. Pope in
Current site
Google Scholar
PubMed
Close
 DVM, MS
, and
Bonnie Hay Kraus From the Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211.

Search for other papers by Bonnie Hay Kraus in
Current site
Google Scholar
PubMed
Close
 DVM
Free access

SUMMARY

Evoked potentials were induced by transcranial stimulation and recovered from the spinal cord, and the radial and sciatic nerves in six dogs. Stimulation was accomplished with an anode placed on the skin over the area of the motor cortex. Evoked potentials were recovered from the thoracic and lumbar spinal cord by electrodes placed transcutaneously in the ligamentum flavum. Evoked potentials were recovered from the radial and sciatic nerves by surgical exposure and electrodes placed in the perineurium. Signals from 100 repetitive stimuli were averaged and analyzed. Waveforms were analyzed for amplitude and latency. Conduction velocities were estimated from wave latencies and distance traveled. The technique allowed recovery of evoked potentials that had similar characteristics among all dogs. Conduction velocities of potentials recovered from the radial and sciatic nerves suggested stimulation of motor pathways; however, the exact origin and pathway of these waves is unknown.

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 4778 4717 23
PDF Downloads 52 26 1
Advertisement