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presenting digital output on the 'onset' of the stimulus

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  • presenting digital output on the 'onset' of the stimulus

    I am having a little problem with digital outputs.

    The digital output is supposed to come out at the same time the picture is presented, however, there is a bit of delay (about 2 seconds).

    I have tried everything I can but couldn't figure out why theres a delay.
    (I also have asked the Acknowledge technician but we concluded that the superlab is the problem)

    Thanks in advance.

  • #2
    If the participant does not respond, the delay will actually be a full 3 seconds. That’s because you are presenting the picture first, with a 3000ms time limit.

    The solution is to have the digital output events appear before the picture instead of after.

    Side note: in the future, if you (or other forum members) want to post experiments that contain disturbing pictures or nudity, we would be grateful if you can post a warning note about that first or send a private message.

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    • #3
      Sorry about not noticing it beforehand. I will make sure to post a warning note next time.

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