tms pulse during video playing

[David McFarlane]

Hmm, you bring up an interesting limitation of movie presentation in 
E-Prime.  I also find the same limitation with sound 
presentation.  As far as I can tell, E-Prime has no mechanism to 
perform secondary actions or script during the playback of sound or 
movie files.  With a lower level language (e.g., C or C++) I would 
write a loop to keep refreshing the output buffer and checking the 
clock to perform other actions, but I do not know how to do that with 
E-Prime objects, or if that is even possible.  I will be really 
interested if someone more clever than me can post a solution.

-- David McFarlane, Professional Faultfinder


At 5/12/2009 12:52 PM Tuesday, you wrote:

>Hello everybody,
>
>I have some troubles with movies presentation: I'm trying to give a
>TMS pulse during the presentation of a video (it lasts 2 seconds so
>it's pretty short), at very precise timings, for example 767
>milliseconds after the stimulus onset, while the video is still
>ongoing.
>
>I already did a similar experiment using images: I sat the stimulus
>duration time at 0, and it worked, but it doesn't with videos (the
>program shows just the frame zero).
>
>What kind of InLine should I write?
>
>And, how can I determine the pre-release time with movies?
>
>Thank you all, I really need some help.
>
>Ilaria.


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