AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

History of AFNI updates  

Previous Message Next Message
Message List New Topic Print View
|
Gang Chen
May 12, 2009 01:25PM
Lesley,

My guess is that you're misusing the word "deconvolve". The signal processing step in the brain is modeled as a convolution process, that is, the BOLD response can be theorized as the stimulus events convolved with an impulse response function. So a deconvolution of the time series at a voxel means that you're trying to find out EITHER the stimulus events based on a theoretical impulse response OR the impulse response based on the events.

If you meant to separate the BOLD response for the 4 condition in the seed time series, then you'd have to do that yourself based on the event sequence.

Gang
Reply Quote
RSS
Subject Author Posted

correlation anlysis

Lesley Fidler May 11, 2009 02:42PM

Re: correlation anlysis

Gang Chen May 12, 2009 09:44AM

Re: correlation anlysis

Lesley Fidler May 12, 2009 11:45AM

Re: correlation anlysis

Gang Chen May 12, 2009 01:25PM

Re: correlation anlysis

Lesley Fidler May 12, 2009 03:16PM

Re: correlation anlysis

Gang Chen May 12, 2009 04:25PM