Significance of Listing's Law
By staying on Listing's plane (i.e. q1 = 0)
- the effort to hold an eccentric position both during saccades and after saccades is minimized.
- but suboptimal rotations (w) are needed so that position (q) remains optimal.
Why?
- Possibility 1: work against muscle elasticity is greater than the work against muscle viscosity
- Possibility 2: more time spent between saccades than during saccades
