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

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Gang Chen
October 31, 2005 11:02AM
Hi Chuck,

> How would one go about coding for compound
> trial types in a stimulus file? Do you just code the
> first TR that an individual trial type occurs or do you
> have to code for each TR that it is occcuring?

If you code a stimulus as 0's and 1's, usually you code it for each TR the stimulus is pesent.

You can code the example as the following (I shuffled your original order a bit)

Cue, Delay-Long, Delay-Short, Motor

0 0 0 0
0 0 0 0
1 0 0 0
0 1 0 0
0 1 0 0
0 1 0 0
0 1 0 0
0 0 0 1
0 0 0 0
0 0 0 0
1 0 0 0
0 0 1 0
0 0 0 1
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 1

I am not so sure about the last TR: Is VGS basically a motor response?

Gang
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Subject Author Posted

rapid event related question

Chuck October 28, 2005 11:06AM

Re: rapid event related question

Tom Johnstone October 28, 2005 12:11PM

Re: rapid event related question

Jatin October 28, 2005 03:02PM

Re: an additional question!

Chuck October 28, 2005 05:20PM

Re: an additional question!

Gang Chen October 31, 2005 11:02AM