[solved] simple response recording

Comments

• gary

  December 2015 edited 12:39PM

  Hi Raph

  Set your second fixation to duration to 0, add an inline script with the following

  #create a keyboard
  my_keyboard = keyboard(keylist=['z', 'x'], timeout=10)
  #create an experiment variable
  var.my_result = 'None'
  #to get first response
  first = 0
  #get current time
  loop_start = clock.time() 
  loop_time = 0
  #wait 1800ms
  while loop_time < 1800:
      key, end_time = my_keyboard.get_key()
      #get current loop running time
      loop_time = self.time() - loop_start
      #first response is made
      if key != None and first ==0:
          first = 1
          var.my_result = key
  

  Change the keylist to match the desired response. The variable my_result will be available to the logger.

  This is written for Opensesame ver 3.

  For further details http://osdoc.cogsci.nl/python/

  Hope this helps

  Gary
• Josh

  December 2015 edited 12:39PM

  Hi Raph,

  Gary's method works, but there's an even simpler way if you don't want to resort to inline_scripts. The duration of your post-stimulus fixation dot is set to 0ms, the keyboard_response is set to 1800ms, and after the keyboard_response you place another fixation dot sketchpad with duration set to 1800-[response_time]. That should do the trick!

  Cheers,

  Josh