I often hear the phrase "It's like patting your head and rubbing your tummy/belly" when referring to trying to perform two seemingly simple actions that inexplicably conflict with each other, preventing one or even both of the actions from being performed well.
Another popular example involves swinging your right foot in a clockwise motion while trying to draw the number 6.
It kind of reminds me of "cognitive dissonance", the uncomfortable feeling you get when holding two contradictory beliefs.
So is there a word for this sensation? "Operational dissonance" perhaps? I'd love to read more about it, but I've no idea what to search for.