Palmisano S, Allison R S, Pekin F, 2008, "Accelerating self-motion displays produce more compelling vection in depth" Perception 37(1) 22 – 33
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Accelerating self-motion displays produce more compelling vection in depth
Stephen Palmisano, Robert S Allison, Fiona Pekin
Received 20 November 2006, in revised form 15 March 2007; published online 28 January 2008
Abstract. We examined the vection in depth induced when simulated random self-accelerations (jitter) and periodic self-accelerations (oscillation) were added to radial expanding optic flow (simulating constant-velocity forward self-motion). Contrary to the predictions of sensory-conflict theory frontal-plane jitter and oscillation were both found to significantly decrease the onsets and increase the speeds of vection in depth. Depth jitter and oscillation had lesser, but still significant, effects on the speed of vection in depth. A control experiment demonstrated that adding global perspective motion which simulated a constant-velocity frontal-plane self-motion had no significant effect on vection in depth induced by the radial component of the optic flow. These results are incompatible with the notion that constant-velocity displays produce optimal vection. Rather, they indicate that displays simulating self-acceleration can often produce more compelling experiences of self-motion in depth.
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