E-Prime Weekly Livestreams

[Devon Struthers]

Hello,

 

My name is Devon Struthers and I am the Product Service and Support Coordinator for Psychology Software Tools. I would like to let you know that our focus on documentation has been increased and have been putting a concentrated effort on video documentation. To that end, we have been holding weekly livestreams covering large topics that we sincerely hope the community will benefit from! We are soon to be nearing the end of our scheduled broadcasts however and would like your help. We'd like to see you on the livestream or in the comments of the livestream with topics you would like to see.  I am always happy to format these live streams in a way that would benefit our users the most. So if there is a particular topic or paradigm that you would like to see, please let us know during one of these live streams! If this is something that interests you, our streams are on Thursdays at 10:30am. We would love to see you there!

Sincerely,

Devon Struthers

[John Capps]

Hey Devon, 

We met at the Biopac conference last month. I would love to get some extra help with sending markers via parallel ports and timing of events. 

I was trying to use the task event panel to sent a marker based on ACC to a stimulus. I try to do it but it always shoots out a error saying that there is no attriubute ACC found.

Also I'm still having issues with the example I brought of having a stimulus disappear on response but the timing of the next event being based on the time it took them to respond so that from stimulus onset to end of the next event would be exactly 10 seconds no matter how long it took them to respond (well up to 10 sec).

with this you said it was something like

If stimulus.RT >0 then c.SetAttrib "Second Duration".... 

 

Feel free to contact me here or email me at jca...@gmail.com

Cheers,

John Capps

UTEP

[David McFarlane]

John,

Setting an attribute to use for Duration of the "next" event as Devon
suggested is the most obvious and pedestrian way to do this, and it also
risks a little more timing inaccuracy. I prefer to fiddle with
SetNextTargetOnsetTime (see that topic in the E-Basic Help facility),
and sometimes timing mode. So I would structure the Procedure something
like

StimSlide <-- gets a response
NextTgtOnCode <-- inline
MaskSlide <-- erases StimSlide when StimSlide gets response

Set Duration of both StimSlide and MaskSlide to 10 sec. For
NextTgtOnCode, use

SetNextTargetOnsetTime StimSlide.OnsetTime

Now MaskSlide will think that it was supposed to start at the same time
as StimSlide, and will use up 10 sec from the OnsetTime of StimSlide.
Slick, eh? If you search this Group for SetNextTargetOnsetTime, you may
find other threads where I explain this. You might still get some
anomaly in cases where the subject does not respond, because the
MaskSlide will still play for one display frame, but the same thing
would happen for Devon's approach. If that matters, you would have to
do a little more footwork to work around that.

BTW, I do not work for PST, I am just another E-Prime user like you.

I will leave the ACC issue to Devon.

-- David McFarlane