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Perceiving the width and height of a hand-held object by dynamic touch
M T Turvey1, G Burton, E L Amazeen
1Center for the Ecological Study of Perception and Action, University of Connecticut, Storrs 06269-1020, USA. cespa1@uconnvm.uconn.edu
Summary
Dynamic touch perception of object dimensions is influenced by inertia. Our study shows that perceived width and height are distinct functions of an object's inertia tensor, revealing key aspects of tactile shape awareness.
Area of Science:
- Psychology
- Robotics
- Human-Computer Interaction
Background:
- Dynamic touch is crucial for object manipulation and spatial awareness.
- The haptic system provides non-visual information about object dimensions.
Purpose of the Study:
- To investigate if perceived object width and height are distinct functions of the inertia tensor.
- To explore the role of inertial properties in tactile shape perception.
Main Methods:
- Two experiments were conducted involving participants judging the dimensions of non-visible objects.
- Objects varied in size, mass, and inertia ellipsoids to isolate inertial effects.
Main Results:
- Perceptions of object width and height were found to be reliable and accurate.
- Both width and height perceptions varied as distinct functions of the objects' inertial eigenvalues.
Conclusions:
- Object dimension perception via dynamic touch is differentially influenced by inertial properties.
- This suggests a complex interplay between inertia, attention, and the perception of tangible shape.