Origin of far-field subcortical potentials evoked by stimulation of the posterior tibial nerve.
Evoked potentials to stimulation of posterior tibial nerves were recorded from cervical-scalp derivation (cervical electrode: surface electrode on spinal process of the fifth cervical vertebrae; scalp: vertex). Four subcortical potentials labeled as N24, P27, N30 and P32 were identified. Evidence indicating that these components are originated in the following structures is presented: N24, posterior columns at the level of C5; P27, high cervical posterior columns or brain stem; N30, medial lemniscus or thalamus; P32, thalamo-cortical radiations.
D000293:Adolescent; D000328:Adult; D000344:Afferent Pathways / Q000502:physiology; D001921:Brain / Q000502:physiology*; D004558:Electric Stimulation; D005071:Evoked Potentials; D006801:Humans; D009431:Neural Conduction; D013979:Tibial Nerve / Q000502:physiology*