• Electroencephalogr Clin Neurophysiol · May 1990

    Case Reports

    Spinal intramedullary recording of human somatosensory evoked potentials.

    • E Urasaki, S Wada, C Kadoya, A Yokata, and S Matsuoka.
    • Department of Neurosurgery, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
    • Electroencephalogr Clin Neurophysiol. 1990 May 1;77(3):233-6.

    AbstractWe here report the first description of the intramedullary spatial distribution of evoked dorsal horn potentials in a human spinal cord. Somatosensory evoked potentials (SEPs) to median nerve stimulation were recorded within the cervical spinal cord of a patient with syringomyelia. Spinal intramedullary recording demonstrated a negative slow wave of the same polarity as the dorsal spinal surface response and a complex wave interpreted as the summation of its negativity and phase-reversed positivity. These two wave forms may depend on the locations at which the recording electrodes are attached to the dorsal horn.

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