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Tytuł pozycji:

Feasibility of clinical Magnetoencephalography (MEG) functional mapping in the presence of dental artefacts

Tytuł :
Feasibility of clinical Magnetoencephalography (MEG) functional mapping in the presence of dental artefacts
Autorzy :
HILLEBRAND, A
FAZIO, P
DE MUNCK, J. C
DIJK, B. W. Van
Pokaż więcej
Temat :
Electrophysiologie
Electrophysiology
Electrofisiología
Encéphale
Encephalon
Encéfalo
Système nerveux central
Central nervous system
Sistema nervioso central
Artefact
Artefacto
Champ magnétique
Magnetic field
Campo magnético
Faisabilité
Feasibility
Practicabilidad
Interférence
Interference
Interferencia
Magnétoencéphalographie
Magnetoencephalography
Magnetoencefalografía
Main
Hand
Mano
Méthode magnétique
Magnetic method
Método magnético
Nerf médian
Median nerve
Nervio mediano
Reconstruction
Reconstrucción
Stimulus électrique
Electrical stimulus
Estímulo eléctrico
Séparation
Separation
Separación
Viabilité
Viability
Viabilidad
Artefact removal
Beamforming
Orthodontic
Sensorimotor cortex
Signal Space Separation
Somatosensory evoked potential
Sciences biologiques et medicales
Biological and medical sciences
Sciences biologiques fondamentales et appliquees. Psychologie
Fundamental and applied biological sciences. Psychology
Psychologie. Psychophysiologie
Psychology. Psychophysiology
Psychophysiologie du comportement
Behavioral psychophysiology
Sciences medicales
Medical sciences
Techniques d'exploration et de diagnostic (generalites)
Investigative techniques, diagnostic techniques (general aspects)
Electrodiagnostic. Enregistrement des activités électriques
Electrodiagnosis. Electric activity recording
Système nerveux
Nervous system
Psychologie. Psychanalyse. Psychiatrie
Psychology. Psychoanalysis. Psychiatry
Neurology
Neurologie
Źródło :
Clinical neurophysiology. 124(1):107-113
Wydawca :
Oxford: Elsevier, 2013.
Rok publikacji :
2013
Opis fizyczny :
print; 7; 3/4 p
Materiał oryginalny :
INIST-CNRS
Typ dokumentu :
Article
Opis pliku :
text
Język :
English
Afiliacje autora :
VU University Medical Center, Department of Clinical Neurophysiology and Magnetoencephalography Center, Amsterdam, Netherlands
Department of Neurophysiopathology, C. Besta Foundation Neurological Institute, Milano, Italy
Department of Medical, Surgical Sciences of Communication and Behavior, Section of Neurology, University of Ferrara, Italy
VU University Medical Center, Department of Physics and Medical Technology, Amsterdam, Netherlands
VU University, Faculty of Movement Sciences, Amsterdam, Netherlands
ISSN :
1388-2457
Dostęp URL :
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=26776688
Prawa :
Copyright 2015 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Numer akcesji :
edsfra.26776688
Czasopismo naukowe
Objective: To evaluate the viability of MEG source reconstruction in the presence of large interference due to orthodontic material. Methods: We recorded the magnetic fields following a simple hand movement and following electrical stimulation of the median nerve (somatosensory evoked field -SEF). These two tasks were performed twice, once with and once without artificial dental artefacts. Temporal Signal Space Separation (tSSS) was applied to spatially filter the data and source reconstruction was performed according to standard procedures for pre-surgical mapping of eloquent cortex, applying dipole fitting to the SEF data and beamforming to the hand movement data. Results: Comparing the data with braces to the data without braces, the observed distances between the activations following hand movement in the two conditions were on average 6.4 and 4.5 mm for the left and right hand, respectively, whereas the dipole localisation errors for the SEF were 4.1 and 5.4 mm, respectively. Without tSSS it was generally not possible to obtain reliable dipole fit or beamforming results when wearing braces. Conclusion: We confirm that tSSS is a required and effective pre-processing step for data recorded with the Elekta-MEG system. Moreover, we have shown that even the presence of large interference from orthodontic material does not significantly alter the results from dipole localisation or beamformer analysis, provided the data are spatially filtered by tSSS. Significance: State-of-the-art signal processing techniques enable the use of MEG for pre-surgical evaluation in a much larger clinical population than previously thought possible.

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