Dear experts,
We wonder whether you can give us a clue on how to handle the analysis of the following fMRI design:
1 block consists of (1 scan = TR = 2sec)
- 2 scans: fixation
- 2 scans: trial instruction
- 7 scans: working on the task
- Then we stop the scanner for 10 seconds to record the oral responses
After each block, the next block starts with the fixation.
There are 4 conditions and we present every condition 8 times.
Because of different steady state effects we throw away the first two scans (fixation). What we are interested in is the activation related to working on the task. We think the best way is to give SPM the onset of this working task and use an event-related design.
The problem is we do not know how SPM handles such scanner breaks.
Thanks a lot in advance for your help.
Best regards,
Roland & Karl
ETH Zurich
Dr. Roland H. Grabner
Research on Learning and Instruction
Institute for Behavioral Sciences
Universitaetsstrasse 6, CAB G 83.2
CH-8092 Zurich, Switzerland
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http://www.ifvll.ethz.ch
+41 44 632 50 53 phone
+41 44 632 12 19 fax
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