I have a question about triggering experiments from a fMRI scanner: I have a simple block design for a fMRI experiment (4 blocks, each of them with a resting period of 15sec + a Go/No-Go task of 60sec). I’ve included one event that waits for the trigger from the scanner at the beginning of each block, in order to synchronize them with the fMRI sequence. However every time the scanner sends a trigger (i.e. every 2.5sec) it is considered and logged as a participant’s response. This conflicts with the actual responses from the participant. Is there any way to stop the triggers during the Go/No-Go task, or to disentangle them from the actual (behavioral) responses?
Thanks in advance.