Millisecond Forums

Background picture

https://forums.millisecond.com/Topic13213.aspx

By sikeller - 5/5/2014

Hey there,

can anybody tell me, if it is possible to create different pictures appearing in the background of a normal stroop?
I've only seen the normal picture stimuli command, which doesn't allow me to present text stimuli (stroop) and pictures together?

Thank you,

Kind regards

Sikeller
By Dave - 5/5/2014

I'm not sure I understand the question. Of course it is perfectly possible to display <text> and <picture> elements together via your <trial>s:

<trial mytrial>
/ stimulusframes = [1=mypicture, mytext]
[...]
</text>

You can also use the <block> element's /bgstim to display a picture.
By sikeller - 5/13/2014

Hi Dave,

thank you. But that doesn't fit because I want to present different pictures (neutral vs. positive ones) and match them with different stroop items.

If I use the <trial> command, the pictures now cover the stroop stimuli, so that you can't see them anymore. How can I put the picture in the background? Picture and stroop should appear at the same time and pictures should change after every stimuli.

Thanks a lot!
By Dave - 5/13/2014

> But that doesn't fit because I want to present different pictures (neutral vs. positive ones) and match them with different stroop items.

Doesn't matter. You can easily do that. See the "How to present stimulus pairs" topic in the documentation.

> How can I put the picture in the background?

Order matters.

/ stimulustimes = [...; 500=mypicture, mytext; ...]

will draw the picture first and the text on top.

/ stimulustimes = [...; 500=mytext, mypicture; ...]

does the opposite.