The dynamics of isometric bimanual coordination

Carson R.G. (1995) The dynamics of isometric bimanual coordination. Experimental Brain Research, 105 3: 465-476. doi:10.1007/BF00233046


Author Carson R.G.
Title The dynamics of isometric bimanual coordination
Journal name Experimental Brain Research   Check publisher's open access policy
ISSN 0014-4819
Publication date 1995-01-01
Sub-type Article (original research)
DOI 10.1007/BF00233046
Open Access Status
Volume 105
Issue 3
Start page 465
End page 476
Total pages 12
Publisher Springer-Verlag
Subject 2800 Neuroscience
Abstract Eight right-handed subjects performed rhythmic isometric applications of torque in the directions of pronation and supination of the forearm, in single limb and bimanual conditions. Bimanual 'movements' were executed in either in-phase (homologous muscles simultaneously active) or anti-phase (non-homologous muscles active simultaneously) modes of coordination, in self-paced and frequency-scaled conditions. In the inphase (frequency-scaled) condition, subjects were required to synchronise (applications of torque) with each beat of a metronome, either in the direction of pronation or supination. In the anti-phase (frequency-scaled) condition, subjects were required to synchronise (applications of torque) with each beat of the metronome, either to the left or to the right. Departures from the anti-phase mode of coordination were observed as pacing frequency was increased. However, these departures were of short duration and the anti-phase mode was always re-established. These findings are in marked contrast to those obtained when there is free motion of the limbs. There also existed systematic differences between the stability of the pronation and supination phases of torque application. These differences were, in turn, modified through coincidence with the pacing signal. These results are discussed with reference to the constraints imposed upon the coordination dynamics by the intrinsic properties of the neuromuscular-skeletal system.
Keyword Coordination dynamics
Human
Joint
Limb
Stability
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 23 Aug 2016, 11:12:51 EST by System User