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Titolo:
Efficient neuromagnetic determination of landmarks in the somatosensory cortex
Autore:
Mertens, M; Lutkenhoner, B;
Indirizzi:
Univ Munster, Inst Expt Audiol, D-48129 Munster, Germany Univ Munster Munster Germany D-48129 pt Audiol, D-48129 Munster, Germany
Titolo Testata:
CLINICAL NEUROPHYSIOLOGY
fascicolo: 8, volume: 111, anno: 2000,
pagine: 1478 - 1487
SICI:
1388-2457(200008)111:8<1478:ENDOLI>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAXIMUM-LIKELIHOOD-ESTIMATION; PRIMARY SENSORIMOTOR CORTEX; DIPOLE SOURCE LOCALIZATION; MAGNETOENCEPHALOGRAPHY; REPRESENTATION; NEUROSURGERY; MAGNETOMETER; POTENTIALS; AMPUTATION; HOMUNCULUS;
Keywords:
somatosensory cortex; evoked potentials; somatosensory; magnetoencephalography; brain mapping; somatosensory homunculus; area 3b; presurgical evaluation; functional landmarks; dipole source localization; stimulation rate;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Lutkenhoner, B Univ Munster, Inst Expt Audiol, Kardinal Von Galen Ring 10,D-48129 Munster, Germany Univ Munster Kardinal Von Galen Ring 10 Munster Germany D-48129
Citazione:
M. Mertens e B. Lutkenhoner, "Efficient neuromagnetic determination of landmarks in the somatosensory cortex", CLIN NEU, 111(8), 2000, pp. 1478-1487

Abstract

Objectives: An efficient procedure for the magnetoencephalographic determination of functional landmarks in the somatosensory cortex has been developed. Methods: Digits 2-5 are stimulated in randomized order using balloon diaphragms. The interval between two stimuli is 500 ms. Source locations in area3b are derived by interpreting the field component with a mean latency of 48 ms in terms of an equivalent current dipole. Results: The signal-to-noise ratio achieved in a given time for each of the 4 stimulation sites turned out to be only slightly smaller than the one obtained by stimulating a single site with an optimal interstimulus interval(about 1 s). Conclusions: Compared to a sequential investigation of the different sites, the proposed procedure allows the reduction of the overall measurement time by a factor of about 2.7. (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 06/04/20 alle ore 21:40:48