With increasing lengths of nerve segment between stimulating and recording electrodes, temporal dispersion increases and amplitude decreases. A: Stimulus onset. B: CMAP onset. C: Peak amplitude of negative phase. D: Return to baseline. E: Peak of positive phase. F: Return to baseline. A-B: Latency. B-C: Rise time. B-C-D: Area under the curve. B-D: Duration of negative phase. C-E: Peak-to-peak amplitude.
