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help > RE: Task-based setup
Aug 14, 2015 06:08 PM | Alfonso Nieto-Castanon - Boston University
RE: Task-based setup
Hi John,
You do need to list all of the block onsets (not just the first), so in 'onsets' enter [0 128 256 384 512] (or 0:128:512) for the first condition and [64 192 320 448 576] (or 64:128:576) for the second condition. You can leave the durations to just 64 since all of your blocks have the same duration (if they had different durations you would list there the duration of each individual block instead)
Hope this helps
Alfonso
Originally posted by John Hutton:
You do need to list all of the block onsets (not just the first), so in 'onsets' enter [0 128 256 384 512] (or 0:128:512) for the first condition and [64 192 320 448 576] (or 64:128:576) for the second condition. You can leave the durations to just 64 since all of your blocks have the same duration (if they had different durations you would list there the duration of each individual block instead)
Hope this helps
Alfonso
Originally posted by John Hutton:
Hi Alfonso:
I am hoping to set up a task-based analysis with 2 states (blocks) 64 seconds each, effective TR=8 sec (this was a combined BOLD/ASL sequence). Total scan time 10 min 48 sec. The manual describes briefly how to do this but there is unfortunately no example provided (the one shown is for resting state) and I want to make sure that I am setting this up properly. In conditions, I define 2 conditions, the first onset t=0, duration 64, then the second onset t=64, duration 64. Do I need to list all 5 cycles of conditions (10 total blocks) or are these 2 sufficient?
Thank you as always for your guidance and all best,
John
I am hoping to set up a task-based analysis with 2 states (blocks) 64 seconds each, effective TR=8 sec (this was a combined BOLD/ASL sequence). Total scan time 10 min 48 sec. The manual describes briefly how to do this but there is unfortunately no example provided (the one shown is for resting state) and I want to make sure that I am setting this up properly. In conditions, I define 2 conditions, the first onset t=0, duration 64, then the second onset t=64, duration 64. Do I need to list all 5 cycles of conditions (10 total blocks) or are these 2 sufficient?
Thank you as always for your guidance and all best,
John
Threaded View
| Title | Author | Date |
|---|---|---|
| John Hutton | Aug 14, 2015 | |
| Alfonso Nieto-Castanon | Aug 14, 2015 | |
| John Hutton | Aug 14, 2015 | |