Hey DED,

I just did the work. I directly combined the two data  say, _RL followed _LR. 
Then, you remain the EVs file of _LR, and add (232*0.72s) to the time in _RL's 
EVs file.
________________________________
From: [email protected] 
[[email protected]] on behalf of Glasser, Matthew 
[[email protected]]
Sent: 01 October 2013 20:02
To: Elvis Dohmatob; [email protected]
Subject: Re: [HCP-Users] Phase-encoding-direction-dependent (LR, RL) EVs files, 
which ones to use in first level GLM ?

I'm not sure I understand what you are trying to do.  Are you sure you don't 
just want to use the individual subject task fMRI data we've already just 
released?

I don't think there is any way you can combine the _LR and _RL data in a first 
level analysis.  You need to combine them in the level 2 analysis (which uses 
flameo not film_gls).

Peace,

Matt.

From: Elvis Dohmatob <[email protected]<mailto:[email protected]>>
Date: Tuesday, October 1, 2013 1:58 PM
To: "[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>
Subject: [HCP-Users] Phase-encoding-direction-dependent (LR, RL) EVs files, 
which ones to use in first level GLM ?

Hi all,

I'm trying to run first level (single-subject) GLM on task fMRI HCP data.  But 
I'm unsure on how to use the timing info.

Example: subject 100307, MOTOR

I have stimulus timing info (cue.txt , lf.txt , lh.txt, rf.txt, rh.txt, 
Sync.txt, t.txt) in both 
100307/tfMRI_MOTOR/unprocessed/3T/tfMRI_MOTOR_LR/LINKED_DATA/EPRIME/EVs/ and 
100307/tfMRI_MOTOR/unprocessed/3T/tfMRI_MOTOR_RL/LINKED_DATA/EPRIME/EVs/, but 
the contents of the corresponding files in both directions vary (for example, 
the contents of 
100307/tfMRI_MOTOR/unprocessed/3T/tfMRI_MOTOR_LR/LINKED_DATA/EPRIME/EVs/lf.txt 
are different from 
100307/tfMRI_MOTOR/unprocessed/3T/tfMRI_MOTOR_RL/LINKED_DATA/EPRIME/EVs/lf.txt).
 How am I to combine/merge these phase-encoding-direction-dependent EVs in my 
GLM ?

N.B.: During the 'topup' step of my preprocessing pipeline, I already 
'combined' the _LR and _RL fMRI data to produce a single 4D film

Thanks in advance for your help.
--
DED

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