Keyboard_Release and Response_Time collection
Hello everyone!
I'm trying to program an experiment, where an audiovisual stimulus will be displayed with a keyboard_release. (the pressing of the button will start the stimulus display, and its release will stop it).
I wrote the following code (I am a newbie at coding!) and everything runs correctly. My only problem is that I want to collect the following two variables: i)key_response and ii) rt (duration from the press until the release of the button). The first one is done, but I don't know how to collect the second one (I can only have the general timestamp). I would be greatful if anyone knows how I must write something like this in my code in order to get the keyboard_release duration.
my_keyboard = Keyboard()
exp.items["target_sampler"].prepare()
exp.items["target_sampler"].run()
exp.items["visual_letter"].prepare()
exp.items["visual_letter"].run()
response, timestamp = my_keyboard.get_key_release(timeout=8000)
items['target_sampler'].sampler.stop()
exp.set('response1', response)
exp.set('time1', timestamp)
Thanks in advance,
V.
Comments
Hi @Vassilis ,
For someone who is new to programming you got quite far. :)
To be able to calculate the duration of the keypress, you will also have to determine the time at which the key was pressed (instead of released) like so:
Is this what you were looking for?
Also, note that you can set variables directly by using the
varobject (instead of the older exp.set() syntax).Hope this helps!
Cheers,
Lotje
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Thank you Lotje for the immediate response!
Everything runs perfectly with these few extra lines! Thanks again!
Great, thanks for letting us know! :)
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