Table 1. Geometric parameters for calculation of gaze and mouse space-time densities.

Geometric parameter	Value
Stimulus size	900 x 900 pixels
Pixel size*	0.265mm
Voxel size in x/y directions	10 pixels
Voxel size in t direction	10ms
Perpendicular distance d from eye to screen	65cm
Radius of foveal region (β = 2°), calculated as per Eq (1)	1.135cm = 43 pixels
Kernel size h for density foveal interaction calculation**	50 pixels
Radius of parafoveal region (β = 5°), calculated as per Eq (1)	2.838cm = 107 pixels
Kernel size h for density in parafoveal interaction calculation**	110 pixels

* Pixel size was calculated as the ratio between screen height (cm) and height of the stimulus image (pixels).

** Radius rounded to the first next multiple of voxel size in x/y directions.