Journal article
Dissociation between upper and lower neck N13 potentials following paired median nerve stimuli
Electroencephalography and clinical neurophysiology / Evoked potentials section, Vol.104(1), pp.68-73
1997
DOI: 10.1016/S0168-5597(96)96045-1
PMID: 9076255
Abstract
Cervical N13 potential in response to the median nerve stimulation can be recorded either from upper (Cv2) or lower (Cv6) neck with almost equal amplitudes and latencies. It has long been debated whether they represent the same or different generator sources. Using a conditioning-test paired stimuli paradigm, we examined the differences of recovery function of Cv2- and Cv6-N13, anterior neck (AN)-P13, and scalp recorded P13/P14 in 6 healthy subjects. All cervical electrodes were referenced to the non-cephalic site. Scalp response was recorded with linked ear reference. The inter-stimulus intervals ranged from 4 to 20 ms with 2 ms increments. Throughout 4 to 18 ms ISI, Cv6-N13, AN-P13 and scalp P13/P14 were suppressed, whereas Cv2-N13 was facilitated. All but scalp P13/P14 returned close to the control at 20 ms ISI. The findings indicate that Cv2-N13, Cv6-N13 and scalp P13/P14 are independent each other and arise from different generator sources. The suppression of Cv6-N13 is consistent with a postsynaptic nature of this potential and may indeed be mediated through dorsal horn interneurons creating a current field orientation in the posterior-anterior direction. The facilitation of Cv2-N13 suggests that this is a presynaptic potential and may travel through the dorsal column with vertical orientation. The longer period of suppression of scalp P13/P14 suggests it to be of polysynaptic origin and to arise at least rostral to the cuneate nucleus.
Details
- Title: Subtitle
- Dissociation between upper and lower neck N13 potentials following paired median nerve stimuli
- Creators
- Atsushi ArakiThoru YamadaTakashi ItoNobuo UrushibaraRyutaro KohiraShih-Pin HsuMalcolm Yeh
- Resource Type
- Journal article
- Publication Details
- Electroencephalography and clinical neurophysiology / Evoked potentials section, Vol.104(1), pp.68-73
- DOI
- 10.1016/S0168-5597(96)96045-1
- PMID
- 9076255
- NLM abbreviation
- Electroencephalogr Clin Neurophysiol
- ISSN
- 0168-5597
- eISSN
- 1872-6380
- Publisher
- Elsevier Ireland Ltd
- Language
- English
- Date published
- 1997
- Academic Unit
- Neurology
- Record Identifier
- 9984020743202771
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