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Related Experiment Videos

Trigeminal nerve-evoked potentials in the dog.

L R Whalen, T L Spurgeon

    American Journal of Veterinary Research
    |November 1, 1986
    PubMed
    Summary

    This study identified five distinct peaks in canine trigeminal nerve-evoked potentials following infraorbital nerve stimulation. These findings provide a detailed latency profile for brain stem and cerebrocortical responses.

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    Area of Science:

    • Neuroscience
    • Electrophysiology

    Background:

    • The trigeminal nerve is crucial for facial sensation.
    • Understanding its evoked potentials aids in diagnosing neurological conditions.

    Purpose of the Study:

    • To characterize brain stem and cerebrocortical potentials evoked by infraorbital nerve stimulation in dogs.
    • To establish normative latency data for specific peaks in these evoked potentials.

    Main Methods:

    • Electrical stimulation of the infraorbital nerve in dogs.
    • Recording brain stem and cerebrocortical potentials using needle electrodes.
    • Averaging potentials to identify distinct peaks and their latencies.

    Main Results:

    • Five short-latency peaks (I, II, III, PI, NI) were consistently identified in the trigeminal nerve-evoked potentials.
    • Mean peak latencies ranged from 0.9 ms (Peak I) to 11.0 ms (Peak NI).
    • Recorded potentials closely matched those from direct nerve stimulation, confirming specificity.

    Conclusions:

    • The study successfully mapped trigeminal nerve-evoked potentials in dogs.
    • Established latency values provide a baseline for future electrophysiological research and clinical applications in neurology.

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