Consistency and similarity of MEG- and fMRI-signal time courses during movie viewing

Movie viewing allows human perception and cognition to be studied in complex, real-life-like situations in a brain-imaging laboratory. Previous studies with functional magnetic resonance imaging (fMRI) and with magneto- and electroencephalography (MEG and EEG) have demonstrated consistent temporal d...

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Bibliographic Details
Published in:NeuroImage (Orlando, Fla.) Fla.), 2018-06, Vol.173, p.361-369
Main Authors: Lankinen, Kaisu, Saari, Jukka, Hlushchuk, Yevhen, Tikka, Pia, Parkkonen, Lauri, Hari, Riitta, Koskinen, Miika
Format: Article
Language:English
Subjects:
Between-subjects design
Brain
Brain mapping
Canonical correlation analysis
Cognition
Correlation analysis
EEG
Electroencephalography
Envelopes
Experiments
Functional magnetic resonance imaging
Intersubject correlation
Magnetoencephalography
Medical imaging
Motion pictures
Movie
Multivariate analysis
Naturalistic stimulation
Neuroimaging
Spatial discrimination
Time series
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Summary:Movie viewing allows human perception and cognition to be studied in complex, real-life-like situations in a brain-imaging laboratory. Previous studies with functional magnetic resonance imaging (fMRI) and with magneto- and electroencephalography (MEG and EEG) have demonstrated consistent temporal dynamics of brain activity across movie viewers. However, little is known about the similarities and differences of fMRI and MEG or EEG dynamics during such naturalistic situations. We thus compared MEG and fMRI responses to the same 15-min black-and-white movie in the same eight subjects who watched the movie twice during both MEG and fMRI recordings. We analyzed intra- and intersubject voxel-wise correlations within each imaging modality as well as the correlation of the MEG envelopes and fMRI signals. The fMRI signals showed voxel-wise within- and between-subjects correlations up to r = 0.66 and r = 0.37, respectively, whereas these correlations were clearly weaker for the envelopes of band-pass filtered (7 frequency bands below 100 Hz) MEG signals (within-subjects correlation r 
ISSN:1053-8119
1095-9572
DOI:10.1016/j.neuroimage.2018.02.045