查看文章

Bruce Bridgeman, Merrit Hoover, Eric Chiu, Joshua Quan

Interaction of Motor Activity and Perception of Slope Page 1 Illusions on Hills: Treading a Slippery Slope Bruce Bridgeman, Merrit Hoover, Eric Chiu, & Joshua Quan University of California, Santa Cruz Page 2 Subjects overestimate slopes with a verbal measure: 30o But they are more accurate With a motor measure: (arm matches slope of hill) Reference: Proffitt, D., R., Bhalla, M., Gossweiler, R., & Midgett, J. (1995) Perceiving geographical slant. Psychonomic Bulletin & Review, 2, 409-428. Background Page 3 The brain handles near space (within arm’s reach) differently than far space. Do motor/perceptual mismatches occur in near space? Two Hypotheses 1. 2. Long climbs require more effort than short ones. Does perception warn us about this? Page 4 Methods The next bigthing Tired, old-fashioned method VR [Virtual Reality] GR Genuine Reality Page 5 Method - Experiment 1 •Observers estimate the slopes of 4 …