EEG-Triggered Functional MRI in Patients With Pharmacoresistant Epilepsy

Sound level dependence of auditory evoked potentials: Simultaneous EEG recording and low-noise fMRI

“…Although most algorithms are not able to completely eliminate all artifacts, it is possible to obtain reasonable EEG quality from simultaneous measurements. This has been shown for signals with high amplitudes which are visible in raw EEG, like alpha activity (Goldman et al, 2002;Laufs et al, 2003;Moosmann et al, 2003) and epileptic spikes Lazeyras et al, 2000;Seeck et al, 1998;Symms et al, 1999;Warach et al, 1996).…”

Simultaneous recording of EEG and BOLD responses: A historical perspective

“…Accordingly, several groups have used simultaneous recordings and similar approaches to localize foci of epileptic discharges in the human brain (e.g. Krakow et al, 1999Krakow et al, , 2001Patel et al, 1999;Lazeyras et al, 2000;Lemieux et al, 2001;Benar et al, 2002;Salek-Haddadi et al, 2002;for review, see Salek-Haddadi et al, 2003;Gotman et al, 2004a,b).…”

Resting-state fMRI studies in epilepsy

“…EEG-fMRI can greatly improve the accuracy of localization of epileptogenic foci [23] . In focal epilepsy, this technique has shown a good correspondence between the active region and the area where the epileptic discharge is generated [24,25] . In generalized epilepsy, the patients typically exhibit thalamic activation and widespread cortical deactivation, a pattern very similar to that seen in the "default" state of brain activity [25,26] .…”