Article (Scientific journals)
Que mesure la neuro-imagerie fonctionnelle: IRMf, TEP & MEG?
Gosseries, Olivia; Demertzi, Athina; Noirhomme, Quentin et al.
2008In Revue Médicale de Liège, 63 (5-6), p. 231-7
Peer reviewed
 

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Keywords :
Brain/physiology/physiopathology; Brain Diseases/physiopathology; Humans; Magnetic Resonance Imaging; Magnetoencephalography; Positron-Emission Tomography
Abstract :
[en] Functional cerebral imaging techniques allow the in vivo study of human cognitive and sensorimotor functions in physiological or pathological conditions. In this paper, we review the advantages and limitations of functional magnetic resonance imaging (fMRI), positron emission tomography (PET) and magnetoencephalography (MEG). fMRI and PET measure haemodynamic changes induced by regional changes in neuronal activity. These techniques have a high spatial resolution (a few millimeters), but a poor temporal resolution (a few seconds to several minutes). Electroencephalogram (EEG) and MEG measure the neuronal electrical or magnetic activity with a high temporal resolution (i.e., milliseconds) albeit with a poorer spatial resolution (i.e., a few millimeters to one centimeter). The combination of these different neuroimaging techniques allows studying different components of the brain's activity (e.g., neurovascular coupling, electromagnetic activity) with both a high temporal and spatial resolution.
Disciplines :
Laboratory medicine & medical technology
Author, co-author :
Gosseries, Olivia  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Demertzi, Athina  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Noirhomme, Quentin ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Tshibanda, J.
Boly, Mélanie ;  Université de Liège - ULiège > Département des sciences cliniques > Neurologie
de Beeck, M Op
Hustinx, Roland  ;  Centre Hospitalier Universitaire de Liège - CHU > Médecine nucléaire
Maquet, Pierre  ;  Centre Hospitalier Universitaire de Liège - CHU > Neurologie Sart Tilman
Salmon, Eric  ;  Centre Hospitalier Universitaire de Liège - CHU > Neurologie Sart Tilman
Moonen, Gustave  ;  Centre Hospitalier Universitaire de Liège - CHU > Neurologie Sart Tilman
Luxen, André ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie organique de synthèse - Centre de recherches du cyclotron
Laureys, Steven  ;  Centre Hospitalier Universitaire de Liège - CHU > Neurologie Sart Tilman
De Tiege, X.
More authors (3 more) Less
Language :
French
Title :
Que mesure la neuro-imagerie fonctionnelle: IRMf, TEP & MEG?
Alternative titles :
[en] Functional neuroimaging (fMRI, PET and MEG): what do we measure?
Publication date :
2008
Journal title :
Revue Médicale de Liège
ISSN :
0370-629X
eISSN :
2566-1566
Publisher :
Hopital de Baviere, Liège, Belgium
Volume :
63
Issue :
5-6
Pages :
231-7
Peer reviewed :
Peer reviewed
Available on ORBi :
since 15 February 2011

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