Figure 1
From: Gravity-dependent change in the ‘light-from-above’ prior
(a) Shape-from-shading stimuli. Central patch (3.03° visual angle), consistent with light-from-above (left) flanked by six peripheral patches (11.95° from centre). Another central patch (right) is ambiguous when viewed upright, convex when left-tilted, concave when right-tilted. (b) The Max Planck CyberMotion Simulator9 positioned observers (upright, supine, and upside-down shown). (c) Participant seated with neck brace, harness, and game pad observing stimuli through circular aperture tube in a room that would be dark during testing.
