Hi Doug,
On 28. Aug 2006, at 23:55 Uhr, [EMAIL PROTECTED]
wrote:
Date: Mon, 28 Aug 2006 17:53:30 -0400
From: Doug Greve <[EMAIL PROTECTED]>
Subject: [Freesurfer] Re: newbie question event-related
To: Sebastian Moeller <[EMAIL PROTECTED]>
Cc: Freesurfer Mailing List <freesurfer@nmr.mgh.harvard.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi Sebastian,
are you using an FIR or gammafit?
Gammafit (-gammafit 0 1.25 -gammaexp 2 in union with -taumax 20 and
-dt event-related). To illustrate this, I used the same parameters with
"-dt blocked", but my new paradigm is so sparse (200ms timulation every
16 seconds), that event related analysis seems like a good idea.
Since we are at it ;), am I right that I should set the TER to 0.2000
and my stimulation epochs to one, while the only fixation periods are
set to zero?
Ahoi & Thanks
Sebastian
doug
Sebastian Moeller wrote:
Hi List, hi Doug,
for the first time I have now data, that realloy wants event-related
analysis (200ms stimulation every 10 seconds). Now, using a TER of 0.2
in the para-file and using "-dt event-related" in mkanalysis-sess.new
(3.0.3 pub x86_64 centos4) was the easy part, but what do I have to
specify in mkcontast-sess? Especially thi "-ircorr" complex (with
-deltarang and -taurange) is daunting. Is it necessary to specify
anything here to get a real event-related analysis, or does fs-fast
already know enough without these parameters (as I specified delta,
tau and even taummax in mkanalysis)? So far any nicorr value I used
produced errors on the way...
I would be delighted for any pointer of how to properly convinve
fs-fast to analyse my data ;).
Ahoi & thanks
Sebastian
--
Douglas N. Greve, Ph.D.
MGH-NMR Center
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Sebastian Moeller
Tel.: 04 21 - 2 18 - 78 38 oder 96 91
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AG Kreiter / FB 2
Institut fuer Hirnforschung III
Abteilung Theoretische Neurobiologie
Universitaet Bremen
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