Movement controls; Opposite or true direction?

[practicecactus]

I guess this is more for people who have movement controls or animatronics experience, but I'm making an eye movement mechanism and I can't decide whether to make the joystick control the actual direction the eyes are moving, or make it the opposite.

I'm leaning towards 'opposite' now because I have a bird rod puppet I'm working on, and the controls are opposite so when I move the lever left the head looks right, and when I pull down, he looks up. I'm thinkin of doing the same for this eye mechanism. Because I want to make a sorta joystick control with a ball and lever sticking up out of it, I think it would be more intuitive to picture the ball movement as the eye, and move it like you would a spotlight.
Thoughts? [Wish I could make a poll for this thread]