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SomatoSensory Evoked Potentials

Somatosensory Evoked Potential (ssep) is one test used to help in the diagnosis of MS. Abnormalities with SSEPS are not specific for MS and can be abnormal due to other disease processes. Information gained from the SSEP in addition to clinical history, physical exam, MRI, and spinal tap results can either support or refute the diagnosis of MS. The technique consists of applying a 5-per second painless electrical stimulus at various nerves in the arms or legs and recording at various locations (near clavicle, cervical spine, and parietal cortex). The impulses generated by the stimuli are averaged and the time the impulse takes to reach the various points is measured. Abnormalities include slowing or blocking at the various points.

Somatosensory Evoked Potentials

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