OS error: Couldn't find image check path: Go-nogo experiment

Builder
1

OS: Win10
PsychoPy version: 3.2.4

What are you trying to achieve?:
I am designing a go-nogo task. The following error always crops up, and I am not sure why. I have checked the file names and everything but I am not able to find the error.

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image780×361 11 KB

image
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This is the excel file:

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image1366×736 63 KB

Could you please help me check where is the problem, the excel file or there is some other issue. Thank you.

2

Hello,

do want to run the experiment online. If so, it is best advice to use only “/” instead of “”. Does psychopy look in the proper folder for the stimuli? It looks as if you have a Go_Nogo folder in your Go_Nogo folder. I suggest to use more a informative name such as stimuli to facilitate debugging.

Bets Jens

3

Hii…
I would eventually shift this experiment to online mode only. I am also not sure why psychopy is going to another folder name Go_Nogo. I also tried to shift the whole folder to the desktop and also change the name of the folder. But still, the same error is showing.

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I tried to change the name in the excel file, but it didn’t work.

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image1366×736 66.6 KB

I also checked the code in the compiler. There the path was fine.

thisExp = data.ExperimentHandler(name=expName, version='',
    extraInfo=expInfo, runtimeInfo=None,
    originPath='C:\\Users\\Dell\\Desktop\\GNG\\Go-Nogo.py',
    savePickle=True, saveWideText=True,
    dataFileName=filename)
# save a log file for detail verbose info
logFile = logging.LogFile(filename+'.log', level=logging.EXP)
logging.console.setLevel(logging.WARNING)  # this outputs to the screen, not a file

This part of the code is where I think the images are called

# set up handler to look after randomisation of conditions etc
UP_DOWN = data.TrialHandler(nReps=1, method='sequential', 
    extraInfo=expInfo, originPath=-1,
    trialList=data.importConditions('GNG_prac_list.xlsx'),
    seed=None, name='UP_DOWN')
thisExp.addLoop(UP_DOWN)  # add the loop to the experiment
thisUP_DOWN = UP_DOWN.trialList[0]  # so we can initialise stimuli with some values
# abbreviate parameter names if possible (e.g. rgb = thisUP_DOWN.rgb)

I hope this much information may help to look for the problem.

4

Hello,

you mind uploading the experiment *.psyexp along with the excel-file and some pictures or giving access to your gitlab-project? It does not have to be the whole experiment.

Best Jens

5

Sure, I will upload my experiment here.
Go-Nogo.psyexp (29.0 KB)
GNG_prac_list.xlsx (9.1 KB)
triangle_down triangle_left triangle_right triangle_up

I hope this helps in looking for the solution.
Thanks

6

Hello,

please find attached my psychopy-code. This loads your stimuli from a folder called stim which resides in a folder GoNoGo.

GNG_prac_list.xlsx (9.2 KB) Go-Nogo.psyexp (29.1 KB)

Notice that I had to make a couple of change to your code to make it running on my computer. But then it loaded the stimuli without any problem.

jitter = [0.5,0.6,0.7,0.8,0.9,1]
shuffle(jitter)

  1. I had to change the polygon to a text stimuli.

  2. It might be helpful to save the duration/jitter

thisExp.addData('jitter', jitter)

To do so insert the code mentioned above in the End Routine tab of your code-element.

Best Jens

7

Hello,
Thanks for your help throughout. But still, my experiment is not working. This time a different error is coming up.

Traceback (most recent call last):
  File "F:\GNG\Go-Nogo_lastrun.py", line 537, in <module>
    win.flip()
  File "C:\Program Files\PsychoPy3\lib\site-packages\psychopy\visual\window.py", line 910, in flip
    thisStim.draw()
  File "C:\Program Files\PsychoPy3\lib\site-packages\psychopy\visual\text.py", line 775, in draw
    self.rgb, self.colorSpace, self.contrast)
  File "C:\Program Files\PsychoPy3\lib\site-packages\psychopy\visual\basevisual.py", line 439, in _getDesiredRGB
    rgb = rgb / 127.5 - 1
TypeError: unsupported operand type(s) for /: 'NoneType' and 'float'

Can you tell me why this error might be showing.
Thanks
8

Hello,

I do not speak JavaScript. I have to rely on PsychoPy’s autotranslate and google-searches but what do you compute here:

?

Best Jens

9

Actually, I also have no clue what this is calculating. I haven’t added anything like this in my experiment. The experiment is the same as I have provided earlier in this thread.

10

Hello,

do you set the colour of a stimulus somewhere?

Best Jens

11

Hello,

did you try to adopt my example to your needs? As you might have noticed, I had to make some changes to your program to get it running, for instance I replaced the polygon with a text-stimulus (+).

Best Jens