Revisited: the inertia tensor as a proprioceptive invariant in humans

Cathy Craig, C. Bourdin

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A multitude of tasks that we perform on a daily basis require precise information about the orientation of our limbs with respect to the environment and the objects located within it. Recent studies have suggested that the inertia tensor, a physical property whose values are time- and co-ordinate-indepenclent, may be an important informational invariant used by the proprioceptive system to control the movements of our limbs (Pagano et al., Ecol. Psychol. 8 (1996) 43; Pagano and Turvey, Percept. Psychophys. 52 (1992) 617; Pagano and Turvey, J. Exp. Psychol. Hum. Percept. Perform. 21 (1995) 1070). We tested this hypothesis by recording the angular errors made by subjects when pointing to virtual targets in the dark. Close examination of the pointing errors made did not show any significant effects of the inertia tensor modifications on pointing accuracy. The kinematics of the pointing movements did not indicate that any on-line adjustments were being made to compensate for the inertia tensor changes. The implications of these findings with respect to the functioning of the proprioceptive system are discussed.
LanguageEnglish
Pages106-110
Number of pages5
JournalNeuroscience Letters
Volume317
Issue number2
Early online date20 Nov 2001
DOIs
Publication statusPublished - 11 Jan 2002

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inertia
limb
physical property
kinematics
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Revisited: the inertia tensor as a proprioceptive invariant in humans. / Craig, Cathy; Bourdin, C.

In: Neuroscience Letters, Vol. 317 , No. 2, 11.01.2002, p. 106-110.

Research output: Contribution to journalArticle

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