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Recording of the event‐related potentials during functional MRI at 3.0 Tesla field strength
Author(s) -
Kruggel F.,
Wiggins C.J.,
Herrmann C.S.,
von Cramon D.Y.
Publication year - 2000
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/1522-2594(200008)44:2<277::aid-mrm15>3.0.co;2-x
Subject(s) - checkerboard , electrophysiology , stimulus (psychology) , electroencephalography , event related potential , computer science , neuroscience , psychology , mathematics , cognitive psychology , geometry
The feasibility of recording event‐related potentials (ERP) during functional MRI (fMRI) scanning was studied. Using an alternating checkerboard stimulus in a blocked presentation, visually evoked potentials were obtained with their expected configuration and latencies. A clustered echoplanar imaging protocol was applied to observe the hemodynamic response due to the visual stimulus interleaved with measuring ERPs. Influences of the electrode/amplifier set up on MRI scanning and the scanning process on the recording of electrophysiological signals are reported and discussed. Artifacts overlaid on the electrophysiological recordings were corrected by post hoc filtering methods presented here. Implications and limitations of conducting combined ERP/fMRI experiments using higher‐level cognitive stimuli are discussed. Magn Reson Med 44:277–282, 2000. © 2000 Wiley‐Liss, Inc.