Creating Blocks of Trials is not working

Builder
1

Hello everyone,

i am using the latest Psychopy version on windows 10. I tried to build a block design like the one in the demo. In the outer loop i have a header which then lists xlsx files beneath. In the inner loop, the demo uses
$header to then calsl the xlsx files from the outer loop.

So instead of calling the xlsx directly for the loop, i call $header which should give me random input from xlsx. 1-4. Problem is, that calling the xlsx with $header is not working. It say “header” is not defined.
Is this Block demo still up to date or did anything change?

I hope someone can help me with this.

Best regards,

Carina

2

Have you tried running the experiment anyway? I have a similar design, where the inner loop component says ‘conditions file’ not found, but when I run the experiment it behaves as expected, picking up the conditions file from a colomn in the block file.

3

It is not running. At first this morning it looked like it is running. But the inner loop failed to correctly perform what it should be doing. I tried to fix it, and now again i cannot run the experiment cause it says that a condition is not defined. It is defined within a file that should be opened thrpugh the outer loop.

outer loop:
header
file1.xlsx
file2.xlsx

inner loop
$header (should e.g. then be advised to call file1.xlsx right?)

Best

4

It seems to be a general definition problem. I get an error even without using an outer loop.
Saying that variable x is not defined. But it is defined…

5

Please can you show exactly how and where you are defining and using header?

6

Sure,
header is part of the outer loop.
header
1.csv
2.csv

In the inner loop, i tell psychopy to get the inputs for my sounds from $header.

So that the inner loop e.g. gets 1.csv from the outer loop and then uses a defined parameter from 1.csv for e.g. my sound_1

Is it clear what I am trying to do?

7

That explains what you want (a sound played in the inner loop defined by a parameter from an Excel loaded by the outer loop). However, to help you I’d need to see screen shots of loops/components and pasted code so I can see exactly how you have tried to achieve your goal.

Giving the exact error message helps too.

8

It´s either this

36.0220 EXP Imported blocks.xlsx as conditions, 4 conditions, 1 params
36.0304 EXP Imported target2.csv as conditions, 24 conditions, 6 params
36.0384 EXP Imported target2.csv as conditions, 24 conditions, 6 params
36.0465 EXP Imported target2.csv as conditions, 24 conditions, 6 params
36.0466 WARNING duplicate variable names: Zielton, randaud, tarrand, target, Sequenz, sound

sound_4 = sound.Sound(Zielton, secs=1.0, stereo=True, hamming=True,
NameError: name ‘Zielton’ is not defined

Experiment ended.

Or it does not give me the error message but is playing the sound too often.

That is the experiemtn setting and design:

blocks

design
design929×137 12.8 KB
![trial|440x332]

I think what I want to do is not possible. I wanted the outer loop, so blocks, to go over all the Parts 4 times. So going through everything (target, trial and deviant) and then repeating it with different inputs.

9

trial

10

I’m sure what you want it possible.

You currently have nReps for Blocks set to 0 so it won’t do anything.

Where is this code?

11

Do you mean this?

Initialize components for Routine “Target2”

Target2Clock = core.Clock()
sound_4 = sound.Sound(Zielton, secs=1.0, stereo=True, hamming=True,
name=‘sound_4’)
sound_4.setVolume(0.1)
key_resp_8 = keyboard.Keyboard()
text_8 = visual.TextStim(win=win, name=‘text_8’,
text=’\nDies ist der Zielton\n\n\nBestätigen Sie bitte mit “3” \n\n\n\n 3\n\n’,
font=‘Arial’,
pos=(0, 0), height=0.05, wrapWidth=None, ori=0,
color=‘white’, colorSpace=‘rgb’, opacity=1,
languageStyle=‘LTR’,
depth=-2.0);

12

I can’t see Target2 in your flow. However, if that is in a Begin Experiment tab of a code component then that’s before the variable Zielton is available. When you create a routine with a variable set to every repeat it gets initially set to undefined

1 Like
13

Okay thank you!