Ending a coroutine with a keypress

LJGS

Hi, I am interested in creating a stop-signal experiment very similar to the one here: https://github.com/smathot/opensesame_coroutines

I want a trial time limit, as included in the example, but what I want different is that the trial should also end if participants make a response, rather than running out to a deadline regardless of what they do. Wondering how I would go about doing this? Setting the coroutine duration to "keypress" did not work.

Thanks

sebastiaan

Hi,

This takes a bit of scripting, but nothing too intimidating. You'll want to take a look at this discussion:

• http://forum.cogsci.nl/index.php?p=/discussion/2174/simple-coroutine-question

Cheers!
Sebastiaan

LJGS

Perfect. Thanks very much.

LJGS

Hi, sorry to be a bummer but I'm still having a problem with this. I believe I have implemented as suggested in that thread, but I am getting what seems to be inconsistent behaviour. Sometimes the trial will terminate with a keypress, sometimes not. It always seem to work fine on the first trial, then intermittently.

I may be doing something wrong, but I can't figure it out. I am hoping you could have a look, Sebastiaan?

https://www.dropbox.com/s/6bki1kbmxma1ipc/stop-signal-task-coroutines-attempt.osexp?dl=0

Thanks again for your help.

eduard

HI LJGS,

Not sure whether it is the solution to your problem, but in the discussion Sebastiaan pointed you to, in the second inline_script, the single line items['stop_signal_coroutines'].var.duration = 5000 in it was placed in the prepare phase of that script. YOu put it in the run phase. I don't really know how this could lead to intermittence, but maybe this will solve it?

Eduard

LJGS

Great, that seemed to work. Thanks Eduard