wait to collect response

[Matt Paffel]

Hey Mich, Thanks for the input.

I was actually able to remedy this by using a couple of different
objects.
First, I have a TextDisplay, duration  = 0
Then, the SoundOut object, duration = 0 and stop after is set to no.
After that I have a wait object duration set to 4800ms.
Lastly, I have another TextDisplay to collect the response made at the
4800 mark.
It seems to work out pretty slick.

Thanks again,

Matt


On Oct 28, 3:41 am, Michiel Spape <Michiel.Sp... at nottingham.ac.uk>
wrote:
> Hi,
> If I'm understanding all of this correctly, I think the simplest way to do this would be to disconnect the audio stimulus and the event at 4800.
> i.e.:
> 0 ms: Sound starts playing (SoundBuffer.Play). Also, log onset of sound (e.g. c.SetAttrib "SoundOnsetTime", Clock.read)
> [no response capturing]
> 4800 ms: some kind of marker (say, an invisible TextDisplay1) end action to terminate
> Between 4800 and 5500 ms: at termination of TextDisplay1:
> If TextDisplay1.RESP <> "" then
>         SoundBuffer.Stop 'kills sound
>         c.SetAttrib "RT", TextDisplay.RTTime - c.GetAttrib("SoundOnsetTime") 'saves RT based on soundbuffer onset time.
> end If
>
> So, in essence, I'd say that the easiest way to "hold off on collecting a response" would, essentially, be NOT to collect a response before the time.
> Best,
> Mich
>
> Michiel Spapé
> Research Fellow
> Perception & Action group
> University of Nottingham
> School of Psychologywww.cognitology.eu
>
>
>
> -----Original Message-----
> From: e-prime at googlegroups.com [mailto:e-prime at googlegroups.com] On Behalf Of Matt Paffel
> Sent: 27 October 2010 17:06
> To: E-Prime
> Subject: wait to collect response
>
> Hello,
>
> I have an experiment that runs some audio files and I'm having an
> issue somewhat similar to what was discussed in this post:
>
> http://groups.google.com/group/e-prime/browse_thread/thread/9d6274c8e...
>
> The experiment that I have runs audio files that are approximately
> 5500ms in length and the event that a participant needs to respond to
> occurs at 4800ms. I wrote some script to adjust the real reaction time
> from the RT of the object which works fine.
>
> I also have the audio object set to terminate after a participant has
> made a response thus moving them to the next trial.
>
> The issue with the program is that if a participant responds prior to
> the 4800 mark, the program jumps to the next trial. Turning the
> objects  end action to "none" doesn't help because if a participant
> responds prior to the 4800 mark, the RT collected is not for the event
> under study.
>
> My question is, is there a way to hold off on collecting a response
> for an allotted amount of time to an object?
>
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