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

NeuroImage
K LankinenM Koskinen

Abstract

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 < 0.14 and between-subjects r < 0.05). Direct MEG-fMRI voxel-wise correlations were unreliable. Notably, applying a spatial-filtering approach to the MEG d...Continue Reading

Citations

May 10, 2020·Social Cognitive and Affective Neuroscience·Jonathan LevyRuth Feldman
Jun 28, 2020·Human Brain Mapping·Xiaowei ZhuangDietmar Cordes
Aug 2, 2019·Scientific Reports·Andrew K FishellJoseph P Culver
Dec 12, 2020·Scientific Reports·Aija KotilaSoile Loukusa

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