Journal article
Kinesthetic perceptions of intrinsic anterior-posterior axes
Experimental brain research, Vol.117(3), pp.465-471
12/02/1997
DOI: 10.1007/s002210050242
PMID: 9438715
Abstract
The purpose of this research was to investigate whether kinesthetic and proprioceptive perceptions of 'straight ahead' were defined by a head- or trunk-fixed axis. Subjects were instructed to align the forearm with the head or trunk anterior-posterior (a/p) axis by elbow flexion or extension in the horizontal plane in five different conditions. In each condition the experimenter varied initial elbow and shoulder horizontal flexion or extension angles and head and/or trunk orientation (by rotation about a vertical axis) on each trial before the subject moved the forearm to align it with the head or trunk axis. The upper limb motion was voluntarily constrained to the horizontal plane through the shoulder. Variable errors were significantly lower when subjects aligned the forearm to the trunk-fixed a/p axis. Furthermore, the perceptual errors showed a greater dependence on body segment orientations when the forearm was aligned to the head axis than to the trunk axis. We conclude that the trunk a/p axis is preferred to the head a/p axis for specifying upper limb segment orientations in the horizontal plane at the kinesthetic perceptual level.
Details
- Title: Subtitle
- Kinesthetic perceptions of intrinsic anterior-posterior axes
- Creators
- W. G. Darling - University of IowaTarra E. Williams - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Experimental brain research, Vol.117(3), pp.465-471
- DOI
- 10.1007/s002210050242
- PMID
- 9438715
- ISSN
- 0014-4819
- eISSN
- 1432-1106
- Language
- English
- Date published
- 12/02/1997
- Academic Unit
- Physical Therapy and Rehabilitation Science; Health and Human Physiology
- Record Identifier
- 9984259646902771
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