Reference : Que mesure la neuro-imagerie fonctionnelle: IRMf, TEP & MEG?
Scientific journals : Article
Human health sciences : Laboratory medicine & medical technology
http://hdl.handle.net/2268/31382
Que mesure la neuro-imagerie fonctionnelle: IRMf, TEP & MEG?
French
[en] Functional neuroimaging (fMRI, PET and MEG): what do we measure?
Gosseries, Olivia mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Demertzi, Athina [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Noirhomme, Quentin mailto [Université de Liège - ULg > > Centre de recherches du cyclotron >]
Tshibanda, J. [> > > >]
Boly, Mélanie mailto [Université de Liège - ULg > Département des sciences cliniques > Neurologie >]
de Beeck, M Op [> > > >]
Hustinx, Roland mailto [Centre Hospitalier Universitaire de Liège - CHU > > Médecine nucléaire >]
Maquet, Pierre mailto [Centre Hospitalier Universitaire de Liège - CHU > > Neurologie Sart Tilman >]
Salmon, Eric mailto [Centre Hospitalier Universitaire de Liège - CHU > > Neurologie Sart Tilman >]
Moonen, Gustave mailto [Centre Hospitalier Universitaire de Liège - CHU > > Neurologie Sart Tilman >]
Luxen, André mailto [Université de Liège - ULg > Département de chimie (sciences) > Chimie organique de synthèse - Centre de recherches du cyclotron >]
Laureys, Steven mailto [Centre Hospitalier Universitaire de Liège - CHU > > Neurologie Sart Tilman >]
De Tiege, X. [> > > >]
2008
Revue Médicale de Liège
Hopital de Baviere
63
5-6
231-7
Yes (verified by ORBi)
0370-629X
Liège
Belgique
[en] Brain/physiology/physiopathology ; Brain Diseases/physiopathology ; Humans ; Magnetic Resonance Imaging ; Magnetoencephalography ; Positron-Emission Tomography
[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.
http://hdl.handle.net/2268/31382
also: http://hdl.handle.net/2268/5536

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