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| = Tutorial 19: Connectivity = | = Tutorial 26: Connectivity = '''[TUTORIAL UNDER DEVELOPMENT: NOT READY FOR PUBLIC USE] ''' |
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During the past few years, the research focus in brain imaging moved from localizing functional regions to understanding how different regions interact together. It is now widely accepted that some of the brain functions are not supported by isolated regions but rather by a dense network of nodes interacting in various ways. In order to quantify the amount of information exchanged between regions, experts in signal processing developed metrics to compare signals recorded in these different regions. These inter-regional measures can help us explore the brain dynamics by understanding if two regions are activated synchroneously during a task (functional connectivity) or linked by causal interactions (effective connectivity). This tutorial introduces the measures and display tools available in Brainstorm to explore this inter-regional connectivity. |
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| http://neuroimage.usc.edu/forums/showthread.php?1796-How-the-Corr-matix-is-saved http://neuroimage.usc.edu/forums/showthread.php?1556-Comparing-Coherence-data http://neuroimage.usc.edu/forums/showthread.php?1681-PLV-NxN-Read-matrix | == Available measures == In the Process1 tab, the menu "Connectivity" contains |
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| == What's in the connectivity file == | == Correlation sensor-sources == == Coherence scout-scout == == On the hard drive == |
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| == Additional documentation == * Forum: Connectivity matrix storage:[[http://neuroimage.usc.edu/forums/showthread.php?1796-How-the-Corr-matix-is-saved|http://neuroimage.usc.edu/forums/showthread.php?1796]] * Forum: Comparing coherence values: http://neuroimage.usc.edu/forums/showthread.php?1556 * Forum: Reading NxN PLV matrix: http://neuroimage.usc.edu/forums/showthread.php?1681-PLV-NxN-Read-matrix <<HTML(<!-- END-PAGE -->)>> |
Tutorial 26: Connectivity
[TUTORIAL UNDER DEVELOPMENT: NOT READY FOR PUBLIC USE]
Authors: Francois Tadel, Esther Florin, Sergul Aydore, Syed Ashrafulla, Elizabeth Bock, Sylvain Baillet
During the past few years, the research focus in brain imaging moved from localizing functional regions to understanding how different regions interact together. It is now widely accepted that some of the brain functions are not supported by isolated regions but rather by a dense network of nodes interacting in various ways. In order to quantify the amount of information exchanged between regions, experts in signal processing developed metrics to compare signals recorded in these different regions.
These inter-regional measures can help us explore the brain dynamics by understanding if two regions are activated synchroneously during a task (functional connectivity) or linked by causal interactions (effective connectivity). This tutorial introduces the measures and display tools available in Brainstorm to explore this inter-regional connectivity.
Contents
Available measures
In the Process1 tab, the menu "Connectivity" contains
Correlation sensor-sources
Coherence scout-scout
On the hard drive
Document the file tags
Document how to extract the connect matrix
How to input your own connect matrix
Additional documentation
Forum: Connectivity matrix storage:http://neuroimage.usc.edu/forums/showthread.php?1796
Forum: Comparing coherence values: http://neuroimage.usc.edu/forums/showthread.php?1556
Forum: Reading NxN PLV matrix: http://neuroimage.usc.edu/forums/showthread.php?1681-PLV-NxN-Read-matrix