Using them with a 50% opacity paintbrush tool set to dissolve gives you these not-quite-noise pixel patterns, I then manually smudged those to get to proper glitch stuff. I don't think that is the intended way to use them but it at least got me the results I wanted. Hope that helps.
Viewing post in Glitch Pixel Brushes II comments
while i think that might also be doable with any plain square pixel brush, that's really cool and i never thought of that :O
i'll have to keep looking into a way to get these brushes to work the way they're "supposed" to because i'm still interested in seeing them in action, but this technique opens up a lot of stuff to me :D thank you!!