how can I show continuous data and stop 4 sec after digital trigger?

Hello:

 I have to show the actual center of presure (CoP) of the person (this involves 8 AI channels). This is a feedback for the subject, so it have to be refreshed at 24hz (more o less). At certain point the subject hear a sound (this is the trigger) and I have to record 1 sec before and 4 sec after the sound. Right now, I'm using a state machine, where in one state (balance) if perform a continuous sampling to show the CoP and then switch to the other state (record) where I use a ReferenceTrigger to adquire 1sec before and 4sec after the sound. My problem is that in the record-state I'm not able to show the CoP. There are any way to record pre-trigger data and pos-trigger data, and at same time show it?

Thanks in advance.