Data Logging Problem

[JoAnn Silkes]

What are the Time Limit and End Action for your stimulus clips? If you 
don't want a response to terminate the video, your Time Limit (under 
Duration/Input) should be set for as long as you want it to be recorded, 
and End Action should be set to "none". So, for instance, I have a protocol 
in which I want a response to be recorded any time up to 4000 ms after 
presentation, but the duration of the stimulus is only 3000 ms, so I've set 
the Time Limit to 4000, which allows it to record for that extra 1000 ms.

JoAnn.



On Thursday, October 2, 2014 8:16:53 AM UTC-7, Ariene Caloia wrote:
>
> Dear David, JoAnn & David,
>
> Thank you all very much for your responses. I apologise for the delay in 
> getting back to you, I was out of office yesterday. 
>
> The experiment is a reaction time task that will be used with fMRI, the 
> video clips are of moves in sport, and participants are required to respond 
> to how they believe play is progressing. Session proc is structured as 
> 'TextDisplay3, InLine1, Welcome, TextDisplay 2, blockproc (TextDisplay1, 
> VideoSlide, ResponseSlide), Endslide'. 
> My pre-release setting is 0, Input Masks End Action set to None
> VideoSlide.RTTime, VideoSlide.RT & VideoSlide.ACC = 0, VideoSlide.CRESP & 
> VideoSlide.RESP = blank
>
> As it is a reaction time task it is quite important that response data is 
> logged all throughout the stimulus, and a little beyond too. And I do not 
> want to terminate the clip once a response is made as I wish to record 
> brain activity through the entirety of the video. In my testing, having 
> purposefully responded AFTER the stimulus clip, I'm consistently finding 
> some are being recorded and some are not, but I have not seen any 
> consistency as to specifically which ones are and which are not recorded. 
>
> It seems odd to me that the program should not allow me to measure a 
> response beyond the stimulus without terminating the video for a reaction 
> time task...I could record the reaction time manually whilst the 
> participant is in the scanner, but this is not ideal. Therefore would be 
> very grateful if anyone has any further suggestions!
>
> Thank you again, your time and help is greatly appreciated!
>
> Best,
>
> Ariene
>
>

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