Psychology Commons^™

The Influence Of Exploration Mode, Orientation, And Configuration On The Haptic Mu« Ller-Lyer Illusion, Morton A. Heller, Melissa Mccarthy, Jennifer Schultz, Jayme Green, Melissa Shanley, Ashley Clark, Samantha Skoczlyas, Jamie Prociuk

Morton A. Heller

We studied the impact of manner of exploration, orientation, spatial position, and configuration on the haptic Mu« ller-Lyer illusion. Blindfolded sighted subjects felt raised-line Mu« ller-Lyer and control stimuli. The stimuli were felt by tracing with the index finger, free exploration, grasping with the index finger and thumb, or by measuring with the use of any two or more fingers. For haptic judgments of extent a sliding tangible ruler was used. The illusion was present in all exploration conditions, with overestimation of the wings-out compared to wings-in stimuli. Tracing with the index finger reduced the magnitude of the illusion. However, …