We have located links that may give you full text access.
JOURNAL ARTICLE
REVIEW
Generators of human spinal somatosensory evoked potentials.
Somatosensory evoked potentials recorded over the spine with a noncephalic reference following posterior tibial nerve stimulation have several components. (1) A stationary, synapse-dependent, negative potential (N22) occurs synchronously with a positive potential, P22, recorded ventral to the spinal cord and is localized to the lumbar region overlying the lumbar root entry zone. The N22/P22 complex is attributed to activation of interneurons in the dorsal gray of the lumbar cord. (2) A traveling negative potential with a gradually increasing latency may be recorded from the sacral to the cervical region. Its short refractory period indicates that it is not dependent on transmission across a synapse. This activity is attributed to transmission of the afferent volley through the lumbosacral plexus, roots, and the dorsal columns of the spinal cord. (3) N29, a stationary, synapse-dependent negative potential, localizes to the rostral cervical spine and is attributed to activation of the gracile nucleus relay cells. Following stimulation of the median nerve or fingers, the waveforms recorded over the cervical spine with a noncephalic reference include (1) the proximal plexus volley, a traveling negative potential reflecting transmission through the proximal brachial plexus and roots; (2) the dorsal column volley (DCV), the latency of which gradually increases from the caudal to rostral cervical region (the DCV is attributed to transmission of the afferent volley through the dorsal columns of the cervical cord); and (3) N13, a stationary negative waveform, with a long refractory period consistent with its dependence on transmission across a synapse. Experimental animal and human studies indicate that the N13 waveform is dependent on activity of at least two generator sites, namely the dorsal gray of the cervical cord and the cuneate nucleus.
Full text links
Related Resources
Trending Papers
Heart failure with preserved ejection fraction: diagnosis, risk assessment, and treatment.Clinical Research in Cardiology : Official Journal of the German Cardiac Society 2024 April 12
Proximal versus distal diuretics in congestive heart failure.Nephrology, Dialysis, Transplantation 2024 Februrary 30
Efficacy and safety of pharmacotherapy in chronic insomnia: A review of clinical guidelines and case reports.Mental Health Clinician 2023 October
World Health Organization and International Consensus Classification of eosinophilic disorders: 2024 update on diagnosis, risk stratification, and management.American Journal of Hematology 2024 March 30
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app