DocumentCode :
3210835
Title :
The quest for single trial correlations in multimodal EEG-fMRI data
Author :
De Vos, Maarten ; Zink, Rob ; Hunyadi, Borbala ; Mijovic, Bogdan ; Van Huffel, Sabine ; Debener, Stefan
Author_Institution :
Dept. of Psychol., Univ. of Oldenburg, Oldenburg, Germany
fYear :
2013
fDate :
3-7 July 2013
Firstpage :
6027
Lastpage :
6030
Abstract :
In the past decade, technological advances have made it possible to reliably measure brain activity using simultaneous EEG-fMRI recordings inside an MR scanner. The main challenge then became to investigate the coupling between the EEG and fMRI signals in order to benefit from the simultaneously integrated temporal and spatial resolution. Although it is crucial to know when features in EEG and fMRI are expected to correlate with each other before the identification of common sources from multimodal data is possible, it is still a matter of debate. In this study, we address this question by analysing EEG and fMRI data separately from a face processing task. We show that we are able to reliably estimate single trial (ST) dynamics of face processing in EEG and fMRI data separately in four subjects. However, no correlation is found between the modalities. This implies that in this task modality-specific information is larger than the information that is shared by the modalities.
Keywords :
biomedical MRI; electroencephalography; neurophysiology; EEG data; MR scanner; brain activity; common source identification; fMRI signal; face processing task; integrated temporal resolution; modality-specific information; multimodal EEG-fMRI data; multimodal data; simultaneous EEG-fMRI recording; single trial correlation; single trial dynamics; spatial resolution; Correlation; Couplings; Electroencephalography; Estimation; Face; Reliability; Signal to noise ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2013 35th Annual International Conference of the IEEE
Conference_Location :
Osaka
ISSN :
1557-170X
Type :
conf
DOI :
10.1109/EMBC.2013.6610926
Filename :
6610926
Link To Document :
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