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  • Title: Spinal intramedullary recording of human somatosensory evoked potentials.
    Author: Urasaki E, Wada S, Kadoya C, Yokata A, Matsuoka S.
    Journal: Electroencephalogr Clin Neurophysiol; 1990; 77(3):233-6. PubMed ID: 1691976.
    Abstract:
    We 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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