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Titolo:
TOPOGRAPHY OF SOMATOSENSORY-EVOKED MAGNETIC-FIELDS FOLLOWING POSTERIOR TIBIAL NERVE-STIMULATION
Autore:
KAKIGI R; KOYAMA S; HOSHIYAMA M; SHIMOJO M; KITAMURA Y; WATANABE S;
Indirizzi:
NATL INST PHYSIOL SCI,DEPT INTEGRAT PHYSIOL OKAZAKI AICHI 444 JAPAN
Titolo Testata:
Electroencephalography and clinical neurophysiology
fascicolo: 2, volume: 95, anno: 1995,
pagine: 127 - 134
SICI:
0013-4694(1995)95:2<127:TOSMFP>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCALP TOPOGRAPHY; POTENTIALS; RESPONSES; CORTEX; RECORDINGS; HUMANS;
Keywords:
SOMATOSENSORY EVOKED MAGNETIC FIELDS; MAGNETOENCEPHALOGRAPHY; SUPERCONDUCTING QUANTUM INTERFERENCE DEVICE (SQUID); POSTERIOR TIBIAL NERVE; SENSORY CORTEX; 2ND SENSORY CORTEX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
R. Kakigi et al., "TOPOGRAPHY OF SOMATOSENSORY-EVOKED MAGNETIC-FIELDS FOLLOWING POSTERIOR TIBIAL NERVE-STIMULATION", Electroencephalography and clinical neurophysiology, 95(2), 1995, pp. 127-134

Abstract

The topography of somatosensory evoked magnetic fields (SEFs) following stimulation of the right and left posterior tibial nerves was investigated in 5 normal subjects (10 nerves). The main deflections N37m-P45m-N60m-P75m and their counterparts P37m-N45m-P60mN75m were identifiedin the hemisphere contralateral to the stimulated nerve. Their equivalent current dipoles (ECDs) were located in the foot area of the primary sensory cortex (SI), probably in area 3b. Restricted minor deflections, P40m-N40m and N50m-P50m, were considered to be generated in area 1 in SI. As the generator sources of P37m-N37m, P40m-N40m and N45m-P45m were temporarily changed and interfered with each other, the direction of ECDs appeared to be rotated with the passage of time. Small middle-latency deflections, N100m-P100m, were clearly identified in 2 subjects. ECDs of these deflections were found in the second sensory cortex (SII), in both hemispheres, although they were clearer in the hemisphere contralateral to the stimulated nerve. In conclusion, short- and middle-latency SEFs are mainly generated in area 3b in SI contralateral to the stimulated nerve, and responses generated in area 1 of SI andSII affect the SEFs to some degree, but interindividual differences are large compared with SEFs evoked by upper limb stimulation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/10/20 alle ore 13:34:33