Converging trials with and without conditions into one Trial List...!!!

[Dilip Kumar]

Dear David,

I was suggested by an Engineer to mix these two trial list and converge 
them into one and only one list which is not possible because both the 
tasks have different trial structure and conditions. I had to assign each 
task with one procedure separately as you mentioned below.

Yes unfortunately our collaborator uses quite old version of tools and we 
have to do the same. We have to use IFIS and E-prime 1.1 on Windows XP OS 
to design our experiment.
I'm getting the random trials as desired and can run the complete trial 
list on E.prime 2.0 version but different is the case for IFIS. The 
complete task runs around 10 to 12 minutes and I can run it only 3 to 4 
minutes on IFIS based system. I have just learned that their scanner cannot 
run fMRI longer than 4 minutes continuously due to the larger size of the 
data and takes a 2 minutes break after every 4 minutes of fMRI run. I 
suspect that might be the reason for my problem. I'm trying to resolve this 
issue with their technical team.
The only solution i can foresee is to break the task into small runs.

Thanks for getting back to me on this issue. Any feedback on this will be 
strongly welcomed

Best Regards,
Dilip




On Wednesday, July 2, 2014 11:10:57 PM UTC+8, McFarlane, David wrote:
>
> Dilip, 
>
> I'm not sure that we're talking about the same thing.  You refer to 
> three Lists, a master List with two sub-Lists.  I am talking about 
> only one List that has rows for both types of trials, differentiated 
> by what Procedure you put in the Procedure column of each row.  Does 
> that make any sense? 
>
> As for the rest...  You use IFIS, eh?  Sigh.  Don't get me started on 
> IFIS, we used that mess years ago and were glad to discard it, we 
> just do straight E-Prime now and are happier for it.  So I do not 
> care to sink my mind into all the IFIS nuances just now.  But I do 
> recall that IFIS puts a few control Lists down in Unreferenced 
> E-Objects, and you have to pay close attention to those because some 
> of those values will override the control values up in your E-Prime 
> design.  (Unless, of course, you have some newer and nicer version of 
> IFIS that I do not know about.)  (And if you search the group for 
> "IFIS", you may find further statements from me at 
> https://groups.google.com/d/topic/e-prime/8e1YmtDQVNY .) 
>
> Best, 
> ----- 
> David McFarlane 
> E-Prime training 
> online:  http://psychology.msu.edu/Workshops_Courses/eprime.aspx 
> Twitter:  @EPrimeMaster (https://twitter.com/EPrimeMaster) 
>
>
> At 7/2/2014 12:15 AM Wednesday, Dilip Kumar wrote: 
> >Hi David, 
> > 
> >I'm already using the procedure you said. I have a master list as a 
> >top layer for two procedures Control and WM each having a weight of 
> >30 with random selection. Each procedure has a sub list with 30 of 
> >trials namely Control & WM Trial List. Each sub list has a trial 
> >procedure with and without condition. The randome 
> > 
> >I am supposed to get random trial from this setup, which I believe 
> >am getting but I am not sure about that. Due to the usage of IFIS 
> >paradigm design wizard, the trial run does not completes all 60 
> >trails. It only runs for random 17 trials and asks for continuing or 
> >end the trial. It restarts the trial cycle if I continue or ends. 
> >I'm not sure how do I cope with this situation. Any suggestions 
> >would be quite helpful. 
> > 
> >Best Regards, 
> >Dilip 
> > 
> > 
> > 
> >On Tuesday, July 1, 2014 3:57:09 AM UTC+8, McFarlane, David wrote: 
> >Dilip, 
> > 
> >Perhaps I do not understand this fully, but couldn't you just use one 
> >List with that contains both tasks, and use the Procedure attribute 
> >to indicate which task (Control or WM) runs on any trial? 
> > 
> >----- 
> >David McFarlane 
> >E-Prime training 
> >online: 
> ><http://psychology.msu.edu/Workshops_Courses/eprime.aspx>
> http://psychology.msu.edu/Workshops_Courses/eprime.aspx 
> > 
> >Twitter:  @EPrimeMaster 
> >(<https://twitter.com/EPrimeMaster>https://twitter.com/EPrimeMaster) 
> > 
> >/---- 
> >Stock reminder:  1) I do not work for PST.  2) PST's trained staff 
> >take any and all questions at 
> ><https://support.pstnet.com>https://support.pstnet.com , and they 
> >strive to respond to all requests in 24-48 hours, so make full use of 
> >it.  3) In addition, PST offers several instructional videos on their 
> >YouTube channel 
> >(<http://www.youtube.com/user/PSTNET>http://www.youtube.com/user/PSTNET 
> >).  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. 
> >\---- 
> > 
> > 
> >At 6/23/2014 11:45 PM Monday, Dilip Kumar wrote: 
> > >I want to converge two tasks into one trial list in order to get 
> > >random trial appearance. As can be seen in design attached, control 
> > >task has only one slide object which acts as stimuli & response 
> > >simultaneously (no condition) while WM task has two slide objects 
> > >one being used as stimulus and other as condition & response medium. 
> > > 
> > >Of-course this in not a huge issue for experts in the group and I 
> > >need some help in resolving it. Can someone please guide me on how 
> > >should I go about converging the experiment at tabular list as well 
> > >as on trial design level. Please do share your tips/tricks and 
> > >suggestions on this issue. 
> > > 
> > >Thanks! 
> > > 
> > >Best regards, 
> > > 
> > >Dilip 
>
>

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