Manipulating amount of stimuli in the same trial

Online experiments
1

Hi,I am new to PsychoPy and come to an issue that is probably really easy to fix but I am struggling at the moment.
I am doing a project on the Posner Task and instead of one cue presented before the target I am presenting two. Now after some time I was able to use two cues separately at the same location before the target. However, in the same trial it is important i also present some trials that have only one cue.
for techs

Here are screenshots of the trial. Do i have to make another trial with only one cue and than combine both trials?

2

I don’t understand how your spreadsheet gives you two cues, but if you want to supress one of them then you could either:

  1. Move the location of the second cue off the screen
  2. Change the opacity of the second cue to 0
  3. Change the second cue image to a transparent png
  4. Move the location/time of the second cue to the same as the first cue
3

Thanks for you help.

What I did is that I made another stimuli on psychpy and gave it the same coordinates. ‘$cuecoordinate’.
Before I tried to separate the two stimuli cues coordinates by creating another ‘cuecoordinate’ column called ‘cuecoordinatetwo’ but when I did this it kept telling me ‘name is not defined’ even though there was no typo

4

Please paste the details of the error message and how you defined cuecorrdinatetwo

5

Hi, it gives the error NameError: name ‘Cuecoordinatetwo’ is not defined.
I’m not sure how to define that variable. I was given a simple Posner task study and downloaded it and that had one cue. I have just tried to copy that cue which was referred to a $cuecoordinate in the cue properties referring to the column in the previous picture I saw. I tried doing the same thing with a different name for my new cue2 however from what you saying it seems i need to define the cuecoordinatetwo. How do i do this?

6

Have you added a column called Cuecoordinatetwo in your spreadsheet?

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