[Eeglablist] Issues in effective connectivity

[Danish Mahmood]

Dear Colleagues
I need to clear few issues in effective connectivity estimation.
1. As per my understanding, at one time instance two brain regions (more specifically group of neurons) can communicate with each other on a single frequency. They may change the frequency but on another time instance. So, is it possible to have connectivity connections over multiple frequencies for one estimation? (let's say I am taking 2 sec EEG per sample.)
2. Is it possible to generate effective connectivity synthetically with known strength. I know there are various methods of generating equations to produce synthetic EEG data with known connections but I am interested in exact strength.
3. Is there any robust technique available for normalization and thresholding of effectivity connectivity for comparison between different datasets?
Thank you
RegardsDr Danish M. Khan