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Titolo:
Antidromic corticospinal tract potential of the brain
Autore:
Partanen, J; Merikanto, J; Kokki, H; Kilpelainen, R; Koistinen, A;
Indirizzi:
Kuopio Univ Hosp, Dept Clin Neurophysiol, SF-70210 Kuopio, Finland Kuopio Univ Hosp Kuopio Finland SF-70210 ysiol, SF-70210 Kuopio, Finland Kuopio Univ Hosp, Dept Pediat Surg, SF-70210 Kuopio, Finland Kuopio Univ Hosp Kuopio Finland SF-70210 Surg, SF-70210 Kuopio, Finland Kuopio Univ Hosp, Dept Anesthesiol, SF-70210 Kuopio, Finland Kuopio Univ Hosp Kuopio Finland SF-70210 esiol, SF-70210 Kuopio, Finland
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 3, volume: 111, anno: 2000,
pagine: 489 - 495
SICI:
1388-2457(200003)111:3<489:ACTPOT>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOMATOSENSORY-EVOKED-POTENTIALS; SUPPLEMENTARY MOTOR AREA; SPINAL-CORD; SCOLIOSIS SURGERY; STIMULATION; GENERATORS; DEFICITS;
Keywords:
corticospinal tract; somatosensory evoked potential; motor evoked potential; motor cortex; scoliosis surgery; spinal cord;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Partanen, J Kuopio Univ Hosp, Dept Clin Neurophysiol, SF-70210 Kuopio, Finland Kuopio Univ Hosp Kuopio Finland SF-70210 210 Kuopio, Finland
Citazione:
J. Partanen et al., "Antidromic corticospinal tract potential of the brain", CLIN NEU, 111(3), 2000, pp. 489-495

Abstract

Objective: To describe a novel potential component (antidromic corticospinal tract potential, ACSP) of the brain after translaminar spinal stimulation of a relaxed patient during scoliosis surgery. To study the origin of this component and to compare its source to known sources of the somatosensoryevoked potentials (SEPs). Methods: We studied 17 consecutive patients during posterior scoliosis surgery. SEPs and ACSPs were elicited by translaminar spinal stimulation at the Th 2 and L 1 levels. ACSPs and SEPs were recorded on the scalp midline. Neurogenic motor evoked potentials (NMEPs) were recorded on the popliteal spaces. Preoperative tibial SEPs were also recorded. Results: ACSP was distinctly separated from the corresponding spinally evoked cortical SEP that showed longer latency than the ACSP, ACSPs decreased and disappeared when stimulation was moved to the caudal direction in the conus region while SEP persisted. In addition, the hemispheric origin of ACSP was confirmed with multichannel midline recordings of the scalp and neck. Thus there was no confusion to the response of nucleus gracilis, corresponding the P 31 response of the tibial nerve SEP. Conclusions: The origin of ACSP seemed to be in the rostral part of the corticospinal tract. ACSP diminished in the conus region when stimulation wasmoved caudally and it disappeared when the stimulus was given to the root level. This proves that ACSP is not a response of the somatosensory tract, instead ACSP represents antidromic response of the pyramidal tract. ACSP can be used in monitoring of the motor tracts during scoliosis surgery together with NMEPs. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 12:45:16