<prompt> What suggests segmental demyelination on NCVDecreased CAMP amplitudesUniform slowing of nerve conductionDecreased area under CAMP curveNo evidence of distal conduction  <response>: Answer- A. Decreased CAMP amplitudesSegmental Demyelination : Because there is variable slowing or different nerve fibers withing the nerve, conduction velocity will be slowed and distal latencies will be prolonged in segmentally demyelinatiing injuries.CMAP amplitudes may be decreased because of temporal dispersion, not because of axonal damage. Therefore, the CMAP may be longer in duration. However, the area under the CAMP will be normal. 