Empirisoft Support

    Welcome to Empirisoft Support
Results 1 to 3 of 3

Thread: Repeating Stimuli Until Key Press

  1. #1
    Join Date
    Mar 2010
    Posts
    2

    Repeating Stimuli Until Key Press

    Is there a way to get Direct RT to repeat a stimulus (flash it repeatedly) until the subject presses a valid response key? If so, could you please explain how to write this into the input spreadsheet?

  2. #2
    Join Date
    Nov 2005
    Posts
    3,328
    Maybe a couple ways to do it. Can you give me an approximate range of flashes possible on each trial, for how long (ms) each flash would occur and the interval (ms) between flashes?

  3. #3
    Join Date
    Mar 2010
    Posts
    2
    Each flash would occur for about 350 ms and the interval between each flash would probably be about 1-2 seconds. The idea is that the subjects see flashes of the stimulus repeatedly until they feel comfortable enough answering a question about it. Some people may only need to see the stimulus flash once, but we'd like it to repeat as many times as the subject needs (but only for a third of a second at a time).

Similar Threads

  1. Key press feedback: Number 10?
    By Hanneke in forum DirectRT Older Versions: General Questions
    Replies: 3
    Last Post: 11-30-2009, 11:03 PM
  2. No response to key press in certain trials
    By Tolliverr in forum DirectRT Older Versions: Troubleshooting
    Replies: 1
    Last Post: 10-31-2008, 01:46 PM
  3. proceeding to next trial after some time or key press
    By Jonathan Berant in forum DirectRT Older Versions: How Do I...
    Replies: 1
    Last Post: 11-07-2007, 11:40 AM
  4. How do you either end a trial after a specified time or key press?
    By ack in forum DirectRT Older Versions: How Do I...
    Replies: 1
    Last Post: 08-14-2007, 12:57 PM
  5. Repeating stimuli when using $ random selection in stimlist
    By jarvis24 in forum DirectRT Older Versions: Troubleshooting
    Replies: 6
    Last Post: 06-28-2007, 11:57 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •