Table 1.

Prior expectations of model parameters and log precisions.

Parameter class	Model parameter	Short description	Prior expectation
Kinetic	(θ1, θ4)	Parameters encoding how gaze is attracted to the invisible location — occluder independent and dependent.	$\left(\frac{1}{4},\frac{1}{32}\right)$
(θ3, θ5)	Parameters encoding how gaze is attracted to the target location — occluder independent and dependent	$\left(\frac{1}{2},\frac{1}{32}\right)$
(θ2, θ6)	Parameters encoding the viscosity of eye and target motion (fixed between experimental conditions)	$\left(\frac{1}{2},\frac{1}{4}\right)$
Precision	ln Πs	Log precision of sensory noise	4
ln Πx	Log precision of eye and target motion	4
ln Πv	Log precision encoding the motion of the attracting location	4
Prior	(θ7, θ8)	Parameters encoding the amplitude and phase lag behind the invisible attracting location	$\left(1,\frac{2\pi }{32}\right)$