Intersubject consistency of cortical MEG signals during movie viewing
According to recent functional magnetic resonance imaging (fMRI) studies, spectators of a movie may share similar spatiotemporal patterns of brain activity. We aimed to extend these findings of intersubject correlation to temporally accurate single-trial magnetoencephalography (MEG). A silent 15-min...
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| Veröffentlicht in: | NeuroImage (Orlando, Fla.) Fla.), 2014-05, Vol.92, p.217-224 |
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| description | According to recent functional magnetic resonance imaging (fMRI) studies, spectators of a movie may share similar spatiotemporal patterns of brain activity. We aimed to extend these findings of intersubject correlation to temporally accurate single-trial magnetoencephalography (MEG). A silent 15-min black-and-white movie was shown to eight subjects twice. We adopted a spatial filtering model and estimated its parameter values by using multi-set canonical correlation analysis (M-CCA) so that the intersubject correlation was maximized. The procedure resulted in multiple (mutually uncorrelated) time-courses with statistically significant intersubject correlations at frequencies below 10Hz; the maximum correlation was 0.28±0.075 in the ≤1Hz band. Moreover, the 24-Hz frame rate elicited steady-state responses with statistically significant intersubject correlations up to 0.29±0.12. To assess the brain origin of the across-subjects correlated signals, the time-courses were correlated with minimum-norm source current estimates (MNEs) projected to the cortex. The time series implied across-subjects synchronous activity in the early visual, posterior and inferior parietal, lateral temporo-occipital, and motor cortices, and in the superior temporal sulcus (STS) bilaterally. These findings demonstrate the capability of the proposed methodology to uncover cortical MEG signatures from single-trial signals that are consistent across spectators of a movie.
•Intersubject synchronization during movie viewing was studied with MEG.•Correlations were computed by multi-set canonical correlation analysis (M-CCA).•Time courses correlated between subjects at |
| doi_str_mv | 10.1016/j.neuroimage.2014.02.004 |
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•Intersubject synchronization during movie viewing was studied with MEG.•Correlations were computed by multi-set canonical correlation analysis (M-CCA).•Time courses correlated between subjects at <10Hz and at the frame rate.</description><identifier>ISSN: 1053-8119</identifier><identifier>EISSN: 1095-9572</identifier><identifier>DOI: 10.1016/j.neuroimage.2014.02.004</identifier><identifier>PMID: 24531052</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>Adult ; Biological and medical sciences ; Brain ; Brain Mapping - methods ; Brain research ; Cerebral Cortex - physiology ; Evoked Potentials, Visual - physiology ; Feasibility Studies ; Female ; Fundamental and applied biological sciences. Psychology ; Humans ; Magnetoencephalography (MEG) ; Magnetoencephalography - methods ; Male ; Middle Aged ; Minimum norm estimate (MNE) ; Motion Pictures ; Movie ; Multi-set canonical correlation analysis (M-CCA) ; Multinational corporations ; Nerve Net - physiology ; Reproducibility of Results ; Sensitivity and Specificity ; Spatial filtering ; Studies ; Vertebrates: nervous system and sense organs ; Visual Perception - physiology</subject><ispartof>NeuroImage (Orlando, Fla.), 2014-05, Vol.92, p.217-224</ispartof><rights>2014 The Authors</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2014 Elsevier Inc. All rights reserved.</rights><rights>Copyright Elsevier Limited May 15, 2014</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c614t-d5312de7cbbb4be41bf2593f5c689462d33499073fef3bfbf0692e81bbe8a88e3</citedby><cites>FETCH-LOGICAL-c614t-d5312de7cbbb4be41bf2593f5c689462d33499073fef3bfbf0692e81bbe8a88e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1053811914000950$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28510537$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24531052$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lankinen, K.</creatorcontrib><creatorcontrib>Saari, J.</creatorcontrib><creatorcontrib>Hari, R.</creatorcontrib><creatorcontrib>Koskinen, M.</creatorcontrib><title>Intersubject consistency of cortical MEG signals during movie viewing</title><title>NeuroImage (Orlando, Fla.)</title><addtitle>Neuroimage</addtitle><description>According to recent functional magnetic resonance imaging (fMRI) studies, spectators of a movie may share similar spatiotemporal patterns of brain activity. We aimed to extend these findings of intersubject correlation to temporally accurate single-trial magnetoencephalography (MEG). A silent 15-min black-and-white movie was shown to eight subjects twice. We adopted a spatial filtering model and estimated its parameter values by using multi-set canonical correlation analysis (M-CCA) so that the intersubject correlation was maximized. The procedure resulted in multiple (mutually uncorrelated) time-courses with statistically significant intersubject correlations at frequencies below 10Hz; the maximum correlation was 0.28±0.075 in the ≤1Hz band. Moreover, the 24-Hz frame rate elicited steady-state responses with statistically significant intersubject correlations up to 0.29±0.12. To assess the brain origin of the across-subjects correlated signals, the time-courses were correlated with minimum-norm source current estimates (MNEs) projected to the cortex. The time series implied across-subjects synchronous activity in the early visual, posterior and inferior parietal, lateral temporo-occipital, and motor cortices, and in the superior temporal sulcus (STS) bilaterally. These findings demonstrate the capability of the proposed methodology to uncover cortical MEG signatures from single-trial signals that are consistent across spectators of a movie.
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We aimed to extend these findings of intersubject correlation to temporally accurate single-trial magnetoencephalography (MEG). A silent 15-min black-and-white movie was shown to eight subjects twice. We adopted a spatial filtering model and estimated its parameter values by using multi-set canonical correlation analysis (M-CCA) so that the intersubject correlation was maximized. The procedure resulted in multiple (mutually uncorrelated) time-courses with statistically significant intersubject correlations at frequencies below 10Hz; the maximum correlation was 0.28±0.075 in the ≤1Hz band. Moreover, the 24-Hz frame rate elicited steady-state responses with statistically significant intersubject correlations up to 0.29±0.12. To assess the brain origin of the across-subjects correlated signals, the time-courses were correlated with minimum-norm source current estimates (MNEs) projected to the cortex. The time series implied across-subjects synchronous activity in the early visual, posterior and inferior parietal, lateral temporo-occipital, and motor cortices, and in the superior temporal sulcus (STS) bilaterally. These findings demonstrate the capability of the proposed methodology to uncover cortical MEG signatures from single-trial signals that are consistent across spectators of a movie.
•Intersubject synchronization during movie viewing was studied with MEG.•Correlations were computed by multi-set canonical correlation analysis (M-CCA).•Time courses correlated between subjects at <10Hz and at the frame rate.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><pmid>24531052</pmid><doi>10.1016/j.neuroimage.2014.02.004</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Adult Biological and medical sciences Brain Brain Mapping - methods Brain research Cerebral Cortex - physiology Evoked Potentials, Visual - physiology Feasibility Studies Female Fundamental and applied biological sciences. Psychology Humans Magnetoencephalography (MEG) Magnetoencephalography - methods Male Middle Aged Minimum norm estimate (MNE) Motion Pictures Movie Multi-set canonical correlation analysis (M-CCA) Multinational corporations Nerve Net - physiology Reproducibility of Results Sensitivity and Specificity Spatial filtering Studies Vertebrates: nervous system and sense organs Visual Perception - physiology |
| title | Intersubject consistency of cortical MEG signals during movie viewing |
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