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Thread: controlling timing of auditory probes

  1. #1
    Join Date
    Nov 2005
    Posts
    38

    controlling timing of auditory probes

    hi to the jarvis team,
    1.i built a ML experiment using the probe file. not bad...but it seems that changing the values in the range collumn has no effect on when the probes will appear. they allways appear in the range of 4.8sec.
    how do i control the buggers?
    thanks,
    baruch

  2. #2
    Join Date
    Nov 2005
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    3,318
    would have to see your que and probe file. you can attach them to your reply here.

  3. #3
    Join Date
    Nov 2005
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    38

    controlling probe times

    attached one questionare and the probe file.
    baruch
    Attached Files Attached Files

  4. #4
    Join Date
    Nov 2005
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    I think your time values may be off by one zero. 800 is going to be 800ms, not 8 seconds. Try 8000, 16000, 24000, etc., rather than 800, 1600, 2400.

    <.. a few moments later..>

    I just checked my inbox and saw that you actually wanted the probes that close together! No, it won’t let you do that because then you end up with probe response confusion--i.e., you don’t know which probe an rt is associated with. I think there is a minimum amount of time that can pass after a probe occurs at which point it will be considered a missing response.
    Last edited by jarvis24; 04-25-2006 at 08:17 AM.

  5. #5
    Join Date
    Nov 2005
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    38

    so are we stuck?

    actually i dont need the Ps responses as i am recording them with an external thingi -- but i really do need short ISI (up to 1 sec) is it possible?
    baruch

  6. #6
    Join Date
    Nov 2005
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    nope. could you just make a single sound file with all your beeps and play it as a backsound?
    Last edited by jarvis24; 04-25-2006 at 10:21 AM.

  7. #7
    Join Date
    Nov 2005
    Posts
    38
    yes i can. thanks

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