OnsetTime Options in Task Events

[jens]

I guess I had my time audits mixed up. So what do think of delaying
the signal in relation to the action delay? I am getting values in the
5 ms area in action delay when I use a random duration on the
preceding object.

/Jens



On Apr 25, 6:18 pm, David McFarlane <mcfar... at msu.edu> wrote:
> Jens,
>
> Stock reminder:  1) I do not work for PST.  2) PST's trained staff
> take any and all questions athttp://support.pstnet.com/e%2Dprime/support/login.asp, and they
> strive to respond to all requests in 24-48 hours -- this is pretty
> much their substitute for proper documentation, so make full use of
> it.  3) In addition, PST takes questions at their Facebook page
> (http://www.facebook.com/pages/Psychology-Software-Tools-Inc/241802160683
> ), and offers several instructional videos there and on their YouTube
> channel (http://www.youtube.com/user/PSTNET) (no Twitter feed yet,
> though).  4) If you do get an answer from PST staff, please extend
> the courtesy of posting their reply back here for the sake of others.
>
> That said, here is my take...
>
> I take it your question is merely about the difference between
> "TargetOnsetTime" and "OnsetTime", without regard to the new Task
> Event feature (which I have not yet explored in detail).  In that
> case, you may start with my essay athttp://groups.google.com/group/e-prime/browse_thread/thread/39e899d34...
> .  From that you should conclude that TargetOnsetTime is merely an
> internal bookkeeping value that indicates only when stimulus
> presentation is scheduled to start, regardless of when presentation
> does start.  OnsetTime indicates when presentation does start, so
> offhand I would think that you want triggers to happen relative to
> OnsetTime.  An OnsetDelay of 5 ms means that a stimulus presentation
> started 5 ms after its scheduled time (i.e., its
> TargetOnsetTime).  If you add a delay of 5 ms from OnsetTime, then
> your triggers should occur at, well, 5 ms after the actual start of
> stimulus presentations.
>
> -----
> David McFarlane
> E-Prime training
> online:  http://psychology.msu.edu/Workshops_Courses/eprime.aspx
> Twitter:  @EPrimeMaster (twitter.com/EPrimeMaster)
>
> At 4/24/2012 09:37 AM Tuesday, you wrote:
>
>
>
>
>
>
>
> >Hi
>
> >I'm using EP 2.0.10.182 *Professional* with the Task Event feature and
> >am wondering about the delay option.
> >I am triggering a text object using the WriteByte action from a custom
> >source drawn from an attribute in a list. Do you guys think it is a
> >valid option to use the delay function and hold the trigger for the
> >mean value of the onset delay received from a previous test run?
>
> >When I run the experiment I get a mean OnsetDelay value of ~5ms for
> >that text object. I assume that the trigger is not adjusted and sent
> >on the actual onset time of the text object, but delivered on the
> >target onset time. Right?
>
> >So, what's your take on this?
>
> >Best
> >Jens

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com.
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com.
For more options, visit this group at http://groups.google.com/group/e-prime?hl=en.