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An EEG-based real-time cortical functional connectivity imaging system

Title
An EEG-based real-time cortical functional connectivity imaging system
Author
임창환
Keywords
Electroencephalography (EEG); Functional connectivity; Real-time neuroimaging; Diagnosis of psychiatric diseases; Inverse problems
Issue Date
2011-09
Publisher
SPRINGER HEIDELBERG, TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
Citation
Medical & Biological Engineering & Computing, Vol.49, No.9 [2011], p985-995
Abstract
In the present study, we introduce an EEG-based, real-time, cortical functional connectivity imaging system capable of monitoring and tracing dynamic changes in cortical functional connectivity between different regions of interest (ROIs) on the brain cortical surface. The proposed system is based on an EEG-based dynamic neuroimaging system, which is capable of monitoring spatiotemporal changes of cortical rhythmic activity at a specific frequency band by conducting real-time cortical source imaging. To verify the implemented system, we performed three test experiments in which we monitored temporal changes in cortical functional connectivity patterns in various frequency bands during structural face processing, finger movements, and working memory task. We also traced the changes in the number of connections between all possible pairs of ROIs whose correlations exceeded a predetermined threshold. The quantitative analysis results were consistent with those of previous off-line studies, thereby demonstrating the possibility of imaging cortical functional connectivity in real-time. We expect our system to be applicable to various potential applications, including real-time diagnosis of psychiatric diseases and EEG neurofeedback.
URI
https://link.springer.com/article/10.1007%2Fs11517-011-0791-6https://repository.hanyang.ac.kr/handle/20.500.11754/74722
ISSN
0140-0118
DOI
10.1007/s11517-011-0791-6
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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