Hi all, I have created the experiment where I have 2 images presented randomly (2 response options) and a sequence of test stimuli presented sequentially (other 2 response options). The stimuli are presented together and only for a short duration. The text file that saves the responses actually sav…

Yes, I’m struggling to understand the task a bit, but in essence, you need to be checking the keyboard on every screen refresh and respond to it immediately, or you will miss responses. Your code could be simplified to something like this: # just a small pause for the participant to get ready # (…

Hi Monika, I’m afraid you’re really going to need to explain in more detail exactly how your task (should) work. It’s not clear from your code what should be happening either: the first keyboard check occurs after the fixation stimulus and the second occurs after the first set of stimuli. No check …

Actually, on reviewing your code, it seems like the first reaction time (assuming that any response is made) will be ~1.5 s (the duration of the fixation stimulus). Subsequent reaction times (if responses are made) will all be multiples of TextStop + PauseStop frames + the original 1.5 seconds. Can…

Dear Michael, The initial fixations is just needed to the participant to get ready. It is presented once. Thanks about the tabular comment, I will try it out. My stimuli are presented intermittently, hence the coding. The task should go that image and text stimuli are presented together for 0.5 s…

[image] monechka: I get the Reaction Time for them as for example 0.487976557 for one and 0.487976557 for another. Let’s say a person pushes 'b' at 0.25 seconds and then 'n' at 0.40 seconds. Both of these keypresses get stored in a buffer, because they aren’t being actively monitored. Then at…

Dear Michael, I have tried to changing the location of event.getKeys(), but unfortunately in that case I get 0 values for my presses and no RTs. I have simulated the presses in builder and in such a case all the responses are accepted and the correct timings are shown. However, I am still not able …

text_2.setText("+") for frameN in range (90): text_2.draw() win.flip() for word in words: text_2.setText(word) RespEvent=event.getKeys() win.flip() for i, duration in enumerate(imageDurations): rand_item = random.choice(stims) win.flip() if 'v' in RespEve…

I have kept changing my code yesterday, but none of the ways were helpful to make what I want: for example: a person presses v and later on m and both replies are accepted and have their on RTs rather than identical RT. Other changes make either everything 0, or only 2 out of 4 responses options …

Hi Monika, it would help if you have comments in your code to explain what should be happening. I can give some hints as to what is going wrong, although it is hard to tell you exactly what to do, as I’m not clear what the task is. But here goes. Your first RespEvent=event.getKeys() will happen j…

Record responses during pauses (blank screens)

Coding

Michael November 28, 2017, 8:45pm 8

Could you just post the relevant bit of your code here? Will be easier to give specific advice on your particular code, if the general explanation isn’t helping.

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Record responses during pauses (blank screens)

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