Fig 1. Screenshots of the display presented to the left eye of the 8 presented surface-luminance combinations.

Row 1 shows rooms with bright rear walls, row 2 shows rooms with dark rear walls. Columns 1 and 2 show rooms with bright side walls; columns 3 and 4 show rooms with dark side walls. Columns 1 and 3 show rooms with bright ceilings; columns 2 and 4 show rooms with dark ceilings. In all screenshots, the simulated width, depth, and height were 4.50 m, 6.00 m, and 2.90 m, respectively.