Research Article

A Signal-Processing-Based Approach to Time-Varying Graph Analysis for Dynamic Brain Network Identification

Figure 2

For each event interval, a key graph is obtained using the framework described in Section 3. We compared the extracted key graphs with the ones obtained from the surrogate time-varying graphs and identified the interactions which are significant. Using each key graph, the interactions which are found to be significant at two different levels, and , are represented in blue and red colors, respectively.
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(a) Stimulus processing
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(b) Pre-ERN
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(c) ERN
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(d) Post-ERN
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(e) Pe
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(f) Intertrial