NDLI: Perception of the length of an object through dynamic touch is invariant across changes in the medium

Content Provider	Springer Nature Link
Author	Mangalam, Madhur Barton, Sophie A. Wagman, Jeffrey B. Fragaszy, Dorothy M. Newell, Karl M.
Copyright Year	2017
Abstract	Rotational inertia—a mechanical quantity that describes the differential resistance of an object to angular acceleration in different directions—has been shown to support perception of the properties of that object through dynamic touch (wielding). The goal of the present study was to examine if perception of the length of an object through dynamic touch depends on its rotational inertia, independent of the medium in which it is wielded. The participants (n = 14) wielded 12 different objects held in air or completely immersed in water and reported perceived lengths of those objects. Each object consisted of a rod of a particular density with a particular number of stacked steel rings attached at a particular location along its length. Perceived length was invariant across medium. In addition, a single-valued function of the major eigenvalue, I $_{1}$, and the minor eigenvalue, I $_{3}$, of the rotational inertia, I, of the 12 objects predicted the perceived lengths of those objects in both air and water, and the perceived lengths were invariant across the two media. These results support the hypothesis that the informational support for perception of the length of an object through dynamic touch is invariant across changes in the medium.
Starting Page	2499
Ending Page	2509
Page Count	11
File Format	PDF
ISSN	19433921
Journal	Perception & Psychophysics
Volume Number	79
Issue Number	8
e-ISSN	1943393X
Language	English
Publisher	Springer US
Publisher Date	2017-08-24
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Embodied perception Haptics Perception and action Cognitive Psychology
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Sensory Systems Linguistics and Language

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