#END ROUTINE AFTER NUMBER OF KEYPRESSES PSYCHOPY BUILDER CODE#

#END ROUTINE AFTER NUMBER OF KEYPRESSES PSYCHOPY BUILDER CODE#

Looking a the source code of getKeys(), I noticed that waitRelease = true didn’t actually do anything.I managed to build an experiment that does what you’re after. Kb = new core.Keyboard() įor (var key, _pj_c = 0, _pj_a = remainingKeys, _pj_b = _pj_a.length (_pj_c Wait for keypress and release > Show Square > repeat I am using the following Auto>JS code in the Each Frame tab: var continuing, kb, remainingKeys I am able to get this to work perfectly in builder, but I am unable to replicate the effect on Pavlovia. This is the functionality I am trying to achieve online. I have searched the forum but have not been able to find or adapt any past question to my specific use-case. Either that will be the unchanging value you set at the beginning of the experiment, or perhaps it is a variable Builder creates from your keyboard component?I don’t know, but anyway, either do your checks in code, or use the Builder keyboard competent, but don’t let them fight with each other.I have been trying (and failing) to get end-on-key-release functionality to work on Pavlovia. In your “each frame” code, you refer to theseKeys. So it doesn’t keep count of keypresses for you: you’ll need to do that yourself. But even then, event.getKeys() only tells you what has been pushed since it was last called (it flushes the buffer of keypresses so you don’t keep detecting the same key). The above code will never evaluate to True, as you only checked for the key presses once. # end loop after certain amount of keystrokes “start experiment” code is code you use to set things up for the rest of the experiment: the subject hasn’t seen anything at that stage. If you run it at the start of the experiment, it checks just once, at that point in time, which is pointless as the task hasn’t even commenced at that stage. event.getKeys() is an instantaneous check.This is because your code will never evaluate to “True”: What I want to achieve is to keep track of the number of keystrokes and log the timing of each of them, independent of the stimulus presentation, and end the loop as soon as the required number of keystrokes is reached.Įvery offered insight is much appreciated.Įach Frame # end loop after certain amount of keystrokes If I include only the code without the key component the stimulus is displayed for the amount of nReps which means the code I tried does not suffice to terminate the loop prematurely. If I tick this box, the dot appears only if the key is pressed, which is exactly what I do not want, because the stimulus presentation and keystrokes should be independent of each other. So, the program is waiting for a keystroke, but if I press the allowed key nothing happens (because the force end of routine option is not ticked). I included the code below to end the loop prematurely if the required number of keystrokes is reached.īelow you can find the code I tried, the flow, and key properties. I made a routine and set a loop around it with a high number of nReps (999), a number of repetitions which would certainly not be reached. Now I would like to let this stimulus appear and disappear until the participant has pressed a key 10 times (and thus have tried to synchronize their keystrokes with the pulsating dot 10 times). The presentation of the dot with a fixed frequency works fine. I am currently programming an experiment in which participants have to synchronize their finger tapping with a visual metronome (a pulsating dot in the middle of the screen).

End routine after number of keypresses psychopy builder