ID 232 – Assessment of the impact of segmental magnetic stimulation on different parts of the nervous system. Issue 3 (March 2016)

• Record Type: Journal Article
• Authors: Blokhina, V.; Nikolaev, S.; Kuznetsov, A.; Smirnov, N.; Melikyan, E.
• Is Part Of: Clinical neurophysiology. Volume 127:Issue 3(2016:Mar.)
• Page Start: e121
• Publication Date: 2016-03
• Subjects: Neurophysiology -- Periodicals; Electroencephalography -- Periodicals; Electromyography -- Periodicals; Neurology -- Periodicals; 612.8
• DOI: 10.1016/j.clinph.2015.11.409
• Languages: English
• ISSNs: 1388-2457

Abstract

Abstract : Objective: Segmental magnetic stimulation is an innovative approach in treatment of lumbal pain. The aim of this study was the assessment of the intensity of pulsed magnetic stimulus required to affect different parts of nervous system such as spinal roots and terminal motor nerve branches. Methods: 27 healthy subjects were enrolled in the study. The threshold of motor evoked potential (MEP) was used to evaluate the excitability of spinal root, whereas the excitability of terminal motor nerve branches was assessed by the contraction of m. trapezius and the subjective feeling as a "push". Results: All healthy individuals, except two, had registered the subjective threshold on the intensity of magnetic stimulus less than the threshold of muscle contraction and MEP. In 51.8% of cases the threshold of muscle contraction was equal or higher than MEP's threshold. Conclusions: Based on the results of previous studies and our data, we suppose that the subjective threshold is an indicator of the excitability of terminal motor nerve branches. The threshold of MEP indicates the excitability of the spinal root. Key message: Our data can have potential clinical applicability for designing an optimum algorithm of repetitive peripheral magnetic stimulation in management of patients with vertebral pathology.