Spinal Cord Evaluation by Cortical Evoked Responses

Cusick, Joseph F.; Myklebust, Joel B.; Larson, Sanford J.; Sances, Anthony

doi:10.1001/archneur.1979.00500390058005

Cited by 88 publications

(18 citation statements)

References 16 publications

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“…The pudendal and pelvic nerves provide a major portion of the innervation to bladder, distal colon and sexual organs. The integrity of the posterior columns of the spinal cord is evaluated by cortical recordings of evoked potentials from lower extremity nerves (Cusick et al, 1979;Eisen & Elleker, 1980;Jones & Small, 1978). The presence of a normal spinal evoked response suggests an intact peripheral and lumbosacral sensory pathway.…”

Section: Patients and Subjectsmentioning

confidence: 99%

The neurovisceral and electrodiagnostic evaluation of patients with thoracic spinal cord injury

1986

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SutntnaryWe studied nine patients with complete thoracic spinal cord injury in order to investigate distal electrophysiologic and end organ function. Studies included motor and sensory nerve conduction velocities, spinal and cortical somatosensory evoked responses, bulbocavernosus reflex responses, cystometry and colonic compliance, motor and myoelectrical activity. These studies confirmed an intact peripheral nervous system, as well as normal nerve root, cauda equina, conus medullaris and distal spinal cord function. Cystometry demonstrated decreased bladder capacity and inability to suppress detrusor contractions. Colonic compliance was greatly reduced, compared to control subjects. While basal colonic motor and myoelectrical activity was normal, these spinal cord injury patients failed to demonstrate the postprandial increase in colonic motor and myoelectric activity seen in normal subjects. These tests allow the clinician to define and document the extent of neuronal injury distal to a transverse myelopathy and to evaluate visceral end organ function.

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Section: Patients and Subjectsmentioning

confidence: 99%

The neurovisceral and electrodiagnostic evaluation of patients with thoracic spinal cord injury

1986

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“…The SEP is greatly attenuated or abolished when the dorsal columns are selectively ablated in animals, 18 indicating that within the spinal cord the SEP is mediated predominantly via these tracts. Conversely, cord lesions that do not interrupt the dorsal columns are associated with a relatively normal SEP. Loss of posterior column function in humans is almost invariably accompanied by a grossly abnormal SEP. 47 Some SEP components may, however, reflect extralemniscal activity; they have been evoked in cats after selective dorsal column transection by stimuli that are sufficient to excite small-diameter peripheral fibers, 76 and tourniquet-induced ischemia in humans abolishes short-latency before long-latency SEP components, suggesting that they are mediated by different centrally conducting tracts.…”

mentioning

confidence: 99%

AAEM minimonograph 19: Somatosensory evoked potentials

Aminoff

Eisen

1998

Muscle Nerve

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“…The lower extremity SEP values reappeared (though delayed) after removal of an extradural benign tumour (Oester et at., 1972). The import ance of the posterior column of the spinal cord in the transmission of SEPs has recently been confirmed (Cusick et at., 1979), especially with regard to the early components of the SEPs of the spinal cord (Wiederholt, 1978). SEPs then reflect the continuity of the posterior columns.…”

Section: Introductionmentioning

confidence: 83%