wisconsin card sorting task

Hi, I am doing a research project involving EEG. I want to use a winsconsin card sorting task in matlab.

But i cant figure out how to do this....

Suggestions are welcome

[Adam Danz]

I don't think there is a matlab program already written for this task. Do you want to generate the card images in matlab and control the taks or just analyze the data in matlab? Because there is already software available outside of matlab that generates the card images and controls the experiment.