Stimulus marker

[juan concepcion]

Thank you for the fast response. I will carefully look at the advice.

Thanks alot!!

Juan

On Tue, Sep 23, 2014 at 11:53 AM, David McFarlane <mcfarla9 at msu.edu> wrote:

> Juan,
>
> Once again, if you use EP2.0.10 or later, I think you can do this better
> with Task Events than with inline code.  How about the following:
>
> Suppose you use the object StimSlide to get your subject response.  Make
> sure that it logs StimSlide.ACC; you might also have to set its PreRelease
> to 0 to make sure that E-Prime sets the StimSlide.ACC attribute before
> executing the next object.  Set up your trial Procedure something like
>
>     ...
>     StimSlide
>     MarkerWait
>     ...
>
> MarkerWait is a Wait object with a Duration of 0.  Add a Task Event at
> StartTime, ActionTime, or OnsetTime (in this case it hardly matters which,
> if you want to know the difference please see https://groups.google.com/d/
> topic/e-prime/OeiZ00V9SRc ).   Set it to use your communications device
> (ParallelPort, Serial, etc.).  Use WriteString as the Action, "(custom)" as
> the Source, "[StimSlide.ACC]" for Custom, String for Data Type; leave Delay
> at 0, and Enabled at Yes.
>
> The key is the Custom value for the Task Event.  If StimSlide is set to
> log .ACC, then E-Prime will automatically create the StimSlide.ACC
> attribute (though you might have to set PreRelease to 0 to make sure that
> MarkerWait does not try to use that attribute before its value is set!).
> Then MarkerWait can use that as an attribute reference in the Custom value.
>
> I have not tested this out myself, so I will be very interested to learn
> what you get to work.  Please write back.
>
> -----
> David McFarlane
> E-Prime training online:  http://psychology.msu.edu/
> Workshops_Courses/eprime.aspx
> Twitter:  @EPrimeMaster (https://twitter.com/EPrimeMaster)
>
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>
> At 9/23/2014 10:34 AM Tuesday, juan concepcion wrote:
>
>> Hello I need help with sending an alphanumeric marker when presenting a
>> stimulus. I have set the port for communication and already have
>> successfully sent markers to another program.Â
>>
>> My wish now is to send markers if stimuli are correct or incorrect. So
>> for example if stimulus is correct send marker "1" and if stimulus is
>> incorrect send marker "0". I need to understand how  in-line script does
>> this and what to write in the in-line script for it to perform the function
>> specified.
>>
>> Thank you in advance!!!
>>
>> Juan
>>
>
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