Event markers

Mon Aug 30 20:03:05 UTC 2010

At 10:08 PM 30/08/2010, you wrote:
>I haven't used VPM, but the software we use allows us to open up a
>channel to see the event markers (thus, you can see the event trigger
>appear on the screen in real time).  When I troubleshoot, I just watch
>that channel to make sure the markers are in the right place.

"watching", they could still be way wrong unless you check ms between 
event markers, and ms between events in e-prime

>  To
>analyze the data, we set the software to look for the markers and then
>analyze the data from those markers.  Thus, another way to
>troubleshoot is to check to make sure you have the same number of
>markers in VPM as you wanted to send in e-prime.  I may be a little
>neurotic, but I don't like the idea that I think I am collecting data
>when I am really not collecting data.  Thus, I would also run a few
>people to make sure the data can be analyzed in the way you want. When
>I began with this setup, I really thought this would be difficult to
>have e-prime speak to the physio computer.  However, this procedure
>has been the easiest and most reliable part of programming with e-
>prime.  I hope you have the same good fortune.  Good luck.
>
>On Aug 30, 12:49 am, Tim Campellone <t.campell... at gmail.com> wrote:
> > Awesome, thanks for the help!
> >
> > On Aug 28, 3:31 pm, Peter Quain <pqu... at une.edu.au> wrote:
> >
> > > some sort of VPM manual here:
> >
> > >http://www.cas.buffalo.edu/classes/psy/lhawk/101/Spring%202003/vpm.pdf
> >
> > > At 07:46 AM 29/08/2010, you wrote:
> >
> > > >I understand what you are saying and had no intention of blindly
> > > >taking the advice of anyone.
> >
> > > >Best,
> > > >Tim
> >
> > > >On Aug 27, 1:14 pm, David McFarlane <mcfar... at msu.edu> wrote:
> > > > > Tim,
> >
> > > > > Thank you for posting back.  But I stand by my point.  Suppose I were
> > > > > to assure you, "Yes, the practices you describe will work exactly as
> > > > > you expect & desire."  Would you simply take my word for that and go
> > > > > on to blindly run your studies?  Why take the word of any of the
> > > > > blowhards here, let alone me?
> >
> > > > > You see, there *must* be some way for you to inspect any received
> > > > > markers in your VPM (whatever that is) data yourself, otherwise those
> > > > > markers are useless.  And if you have any way to inspect the markers,
> > > > > then you can find some way to verify both their presence and their
> > > > > accuracy yourself.  You do not need us for that, and in fact we would
> > > > > pose a hindrance.  And if you cannot manage this yourself, then you
> > > > > have bigger problems that you must master first.
> >
> > > > > Regards,
> > > > > -- David McFarlane, Professional Faultfinder
> > > > > "You got to test that piece of software, You got to test it 
> for yourself,
> > > > > No one else can test it for you, You got to test it for yourself."
> > > > > (Apologies to the Fairfield Four)>I was mostly concerned with
> > > > whether the above E-Prime script would be
> > > > > >enough to mark the data. There is no web support for VPM, and if it
> > > > > >was the case that additional script in that program was needed, I
> > > > > >wanted to start looking immediately. I have seen posts from people
> > > > > >using a variety of software for collecting physio data and 
> was hoping
> > > > > >that maybe a forum member could shed some light on the issue.
> >
> > > > > >Sorry for not checking the E-Prime script prior to 
> posting, but thank
> > > > > >you for your help nonetheless.
> >
> > > > > >Best
> > > > > >Tim
> >
> > > > > >On Aug 25, 6:13 am, David McFarlane <mcfar... at msu.edu> wrote:
> > > > > > > Tim,
> >
> > > > > > > Stock reminder:  1) I do not work for PST.  2) PST's 
> trained staff
> > > > > > > really does like to 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) If you
> > > > > > > do get an answer from PST Web Support, please extend 
> the courtesy of
> > > > > > > posting their reply back here for the sake of others.
> >
> > > > > > > That said, here is my take ...
> >
> > > > > > > OK, let me get this straight.  You have one computer 
> running E-Prime,
> > > > > > > and another computer running VPm to collect 
> physiological data.  You
> > > > > > > wrote a perfectly good program in E-Prime to send signals
> > > > from the EP PC
> > > > > > > to the VPm PC.  But instead of simply running your 
> system to see if it
> > > > > > > works, you ask us if it will work?  What am I missing?
> >
> > > > > > > -- David McFarlane, Professional Faultfinder
> >
> > > > > > > > I am trying to use E-prime to send event markers 
> through a parallel
> > > > > > > > port to a computer that is collecting 
> psychophysiological data using
> > > > > > > > VPm software. I think I have the E-Prime code right 
> for the events I
> > > > > > > > want marked:
> >
> > > > > > > > Player.OnsetSignalEnabled = True
> > > > > > > > Player.OnsetSignalPort = &H378
> > > > > > > > Player.OnsetSignalData = 2
> >
> > > > > > > > Player.OffsetSignalEnabled = True
> > > > > > > > Player.OffsetSignalPort = &H378
> > > > > > > > Player.OffsetSignalData = 3
> >
> > > > > > > > Result1.OnsetSignalEnabled = True
> > > > > > > > Result1.OnsetSignalPort = &H378
> > > > > > > > Result1.OnsetSignalData = 4
> >
> > > > > > > > Result1.OffsetSignalEnabled = True
> > > > > > > > Result1.OffsetSignalPort = &H378
> > > > > > > > Result1.OffsetSignalData = 5
> >
> > > > > > > > My understanding is that this script will cue E-Prime 
> to send the
> > > > > > > > numeric value associated with xxx.OnsetSignalData through
> > > > the parallel
> > > > > > > > port into the psychophysiological data being collected. Is that
> > > > > > > > correct? Also, would I need any additional script for 
> the computer
> > > > > > > > collecting the physio data?
> >
> > > > > > > > Thanks for your help,
> > > > > > > > Tim
> >
> > > > > >--
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