A method for objectively verifying the efficacy of manipulativetherapy is provided. The method includes performing a first dermatomalsomatosensory evoked potentials test (82) on a patient (12) to establisha baseline response of the nerve latency period. A manipulative therapytechnique (88) is then performed on the patient to relieve nerve rootcompression. A second dermatomal somatosensory evoked potentialstest (90) is then performed, to establish a post-manipulation nervelatency period.
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