[solved] mouse_responses

Sasan · May 2012

Hi Sebastian,
i have designed my experiment by opensesame as following:

fixation_dot (Duration: 750ms)
picture_prime (Duration: 750ms)
pause_1 (Duration: 500ms)
question_mark (Duration: 0) (start of response interval)
sound_target (Duration: 0) (start of response interval)
mouse_response (timeout: 2000ms)
pause_2 (Duration: 1000ms)

After a mouseclick the response time should be collected and the next item should be appeared. Now my problem:
the experiment runs trouble-free, while i click the mouse, the response time is collected, but if i don't click the mouse (as i don't know the correct response), give opensesame the following error message after the timeout (2000ms):
An unexpected error occurred, which was not caught by OpenSesame. This should not happen! Message:
'NoneType' object is unsubscriptable
best regards
Madjid

sebastiaan · May 2012

Hi Madjid,

I see. Could you perhaps post the full error message (stracktrace) so I can see where there error occurs? You will find this in the debug window (Control+D).

Cheers,
Sebastiaan

Sasan · May 2012

thx sebastian,

here the error message:

Python 2.6.6
Type "help()", "copyright()", "credits()" or "license()" for more information.
Type "modules()" for details about installed modules and version information.
Use the "print [msg]" statement in inline_script items to print to this debug window.
>>> 
openexp.sampler._legacy.init_sound(): sampling freq = 44100, buffer size = 1024
openexp._canvas.legacy.init_display(): enabling hardware surface
openexp._canvas.legacy.init_display(): enabling double buffering
openexp._canvas.legacy.init_display(): video mode ok
experiment.init_log(): using 'H:/Desktop/subject-0.csv' as logfile (ascii)
experiment.run(): experiment started at Thu May 03 12:34:38 2012
Traceback (most recent call last):
  File "libqtopensesame\qtopensesame.pyo", line 1647, in run_experiment
  File "libopensesame\experiment.pyo", line 258, in run
  File "libopensesame\sequence.pyo", line 59, in run
  File "libopensesame\loop.pyo", line 153, in run
  File "libopensesame\sequence.pyo", line 59, in run
  File "libopensesame\loop.pyo", line 153, in run
  File "libopensesame\sequence.pyo", line 59, in run
  File "libopensesame\mouse_response.pyo", line 98, in run
  File "libopensesame\generic_response.pyo", line 108, in process_response
  File "<string>", line 1, in <module>
  File "libopensesame\generic_response.pyo", line 90, in process_response_mouseclick
TypeError: 'NoneType' object is unsubscriptable
>>>

best regards
Madjid

sebastiaan · May 2012

Hi Madjid,

Ow, it's a bug, unfortunately. I filed it here: https://github.com/smathot/OpenSesame/issues/85. Thank you for bringing it to my attention.

As a workaround, you could use the following inline_script instead of the mouse_response item (put the code in the run phase tab):

from openexp.mouse import mouse
start_time = self.time()
my_mouse = mouse(self.experiment)
button, position, timestamp = my_mouse.get_click(timeout=2000)
self.experiment.set('response', button)
self.experiment.set('response_time', timestamp-start_time)

Hope this helps!

Cheers,
Sebastiaan

Madjid · May 2012

Hi Sebastian,

thank you very much for the Script! Opensesame runs now perfect, but an another problem hat arisen. opensesame can no more evaluate the mean response time and accuracy as feedback for each subject at the end of each phase. It give an 'undefinde' response time and accuracy.
best regards
Madjid

sebastiaan · May 2012

Hi Madjid,

Ow yes, that slipped my mind. If you record the responses manually, you also need to explicitly keep track of the feedback. There is another discussion where I posted some example code, which you should be able to use pretty much straight away: http://forum.cogsci.nl/index.php?p=/discussion/comment/361#Comment_361

Cheers,
Sebastiaan

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