Titre du document / Document title

Motor-evoked potentials elicited from human erector spinae muscles by transcranial magnetic stimulation. Point of view

Auteur(s) / Author(s)

TANIGUCHI S. ⁽¹⁾ ; TANI T. ⁽¹⁾ ; YAMADA H. ⁽²⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Orthopaedic Surgery, Kochi Medical School, JAPON
⁽²⁾ Department of Orthopaedic Surgery, Wakayama Medical College, Wakayama, JAPON

Résumé / Abstract

Study Design. The compound muscle action potentials elicited from the erector spinae muscles by transcranial magnetic stimulation was studied in 15 healthy adults. Objective. To describe the recording procedure for consistent compound muscle action potentials elicited from the human erector spinae by transcranial magnetic stimulation and to establish the normal latency ranges of the responses, at respective spinal levels, for the practical use of this test. of Background Data. Although recording of the compound muscle action potentials from limb muscies after transcraniai magnetic stimulation has been extensively studied, the use of the erector spinae as the target muscle has not, probably because of the difficulty of consistently evoking compound muscle action potentials. Methods. Compound muscle action potentials from the erector spinae muscles were recorded with the subject prone during tonic voluntary background contraction of the nark cxtensor muscles at apptoximately 20% of maximum effort. The compound muscle action potentials were recorded concurrently at multiple levels after magnetic stimulation to the brain with a round coil centered over the vertex. Results. The onset and peak latencies mean ± SD) of the major negative potential increased progressively toward the caudal level from 13.4 ± 2 2 msec and 17.8 ± 2.2 msec at T5-T6 to 20.8 ± 1.5 msec and 26.3 ± 3.0 msec at L4-L5 in healthy subjects. The latencies changed significantly between two adjacent segments from T5-T6/T6-T7 through T12-L1/L1-L2. Conclusions. The compound muscle action potential was elicited from the voluntarily contracted erector spinae at all spinal levels from T5-T6 through L4-L5 in all sublects tested. This noninvasive test has potential for evaluating the functional integrity of the motor pathway in the thoracic spinal cord, the spinal nerves, or both.

Revue / Journal Title

Spine   ISSN 0362-2436   CODEN SPINDD 

Source / Source

1999, vol. 24, n^o2, pp. 154-157 (18 ref.)

Langue / Language

Anglais

Editeur / Publisher

Lippincott, Hagerstown, MD, ETATS-UNIS  (1976) (Revue)

Mots-clés anglais / English Keywords

Somatosensory evoked potential ; Stimulation ; Magnetic ; Transcranial route ; Spinal muscle ; Spinal cord ; Dorsal spine ; Non invasive method ; Exploration ; Method ; Human ; Electrodiagnosis ;

Mots-clés français / French Keywords

Potentiel évoqué somatosensoriel ; Stimulation ; Magnétique ; Voie transcrânienne ; Muscle spinal ; Moelle épinière ; Rachis dorsal ; Méthode non invasive ; Exploration ; Méthode ; Homme ; Electrodiagnostic ;

Mots-clés espagnols / Spanish Keywords

Potencial evocado somatosensorial ; Estimulación ; Magnético ; Vía transcraneana ; Músculo espinal ; Médula espinal ; Raquis dorsal ; Método no invasivo ; Exploración ; Método ; Hombre ; Electrodiagnóstico ;

Localisation / Location

INIST-CNRS, Cote INIST : 18922, 35400007356430.0090