I have 144 stimuli named:
2_5_L_A.jpg ... etc. to 12
In my experiment, each character represents a different attribute. I need to be able to call only one attribute at a time in the entire list, for example all stimuli that have x_x_A_x and randomize it - this would be the "same" condition
Also to be able to do the opposite, in this sense call any stimuli such as x_x_A_x and call on all other stimuli that can be anything except x_x_A_x - this would be the "different condition"
Is this possible to do in matlab? Thanks!