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Evoked potentials induced by transcranial stimulation in dogs
K H Kraus1, D O'Brien, E R Pope
1Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia 65211.
American Journal of Veterinary Research
|November 1, 1990
Summary
This study demonstrates a novel technique for measuring evoked potentials in dogs using transcranial stimulation. The method successfully recorded signals from the spinal cord and peripheral nerves, offering insights into motor pathway conduction.
Area of Science:
- Neuroscience
- Animal Physiology
- Electrophysiology
Background:
- Non-invasive and minimally invasive techniques are crucial for studying neural pathways.
- Understanding motor pathway conduction in canine models is essential for comparative neurology.
Purpose of the Study:
- To develop and validate a method for inducing and recording evoked potentials in dogs.
- To investigate the characteristics and potential origins of these evoked potentials.
Main Methods:
- Transcranial stimulation was applied over the motor cortex in six dogs.
- Evoked potentials were recorded transcutaneously from the thoracic and lumbar spinal cord.
- Peripheral nerve potentials were recorded from radial and sciatic nerves via surgical exposure.
- Signal averaging of 100 repetitive stimuli and waveform analysis (amplitude, latency) were performed.
Main Results:
- The technique consistently recovered evoked potentials with similar characteristics across all dogs.
- Estimated conduction velocities from peripheral nerves suggested stimulation of motor pathways.
- The precise origin and pathway of the recorded waves remain undetermined.
Conclusions:
- This study presents a viable method for evoking and recording neural potentials in dogs.
- The findings suggest potential for further investigation into canine motor pathways using this technique.