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Dear McLaren I have a question in this regard for intrinsic connection. Our subjects were asked to identify primed famous faces and then click the button with left or right index finger and we performed an ERP experiment on it. I am fitting my DCM model on this task oriented experiment. But there is one more thing to this. I am working on the source localisation results which our former postdoc gave and left to a different lab . I have the source data from 0-500ms as my friend did the source localization study on it. i received the source data from him and decided to perform effective network analysis on it. The source data i obtained is from BESA 6.0. I decided to perform DCM analysis on this source data. So in this regard Do i need the intrinsic connectivity between two sources to vary, because my data is task oriented. kindly help as it is important from my study, to understand what an intrinsic connectivity variation can mean in a task oriented situation. Regards Rajan Kashyap On Mon, Jul 6, 2015 at 10:43 PM, MCLAREN, Donald <[log in to unmask]> wrote: > intrinsic connectivity -- connectivity in the brain when the participant > is not doing anything (e.g. resting state) > > modulation of connectivity -- connectivity changes in the brain when the > participant starts doing a task (e.g. gPPI, PPI, DCM models) > > Note: There are some new papers that are investigating the dynamics of the > resting state, so the "intrinsic connectivity" are not static, but are > summarized by a metric that treats them as such in most studies. > > Best Regards, Donald McLaren > ================= > D.G. McLaren, Ph.D. > Research Fellow, Department of Neurology, Massachusetts General Hospital > and > Harvard Medical School > Postdoctoral Research Fellow, GRECC, Bedford VA > Website: http://www.martinos.org/~mclaren > Office: (773) 406-2464 > ===================== > This e-mail contains CONFIDENTIAL INFORMATION which may contain PROTECTED > HEALTHCARE INFORMATION and may also be LEGALLY PRIVILEGED and which is > intended only for the use of the individual or entity named above. If the > reader of the e-mail is not the intended recipient or the employee or agent > responsible for delivering it to the intended recipient, you are hereby > notified that you are in possession of confidential and privileged > information. Any unauthorized use, disclosure, copying or the taking of any > action in reliance on the contents of this information is strictly > prohibited and may be unlawful. If you have received this e-mail > unintentionally, please immediately notify the sender via telephone at > (773) > 406-2464 or email. > > On Sun, Jul 5, 2015 at 1:46 PM, Rajan Kashyap <[log in to unmask]> > wrote: > >> HI all >> >> I could not understand the physical meaning of modulation of connectivity >> and intrinsic connectivity between two areas. >> >> Kindly help >> >> Regards >> Rajan Kashyap >> >> >> >