Hierarchical organisation of neuro-anatomical constraints in interlimb coordination

Riek, S and Woolley, D (2005) Hierarchical organisation of neuro-anatomical constraints in interlimb coordination. Human Movement Science, 24 5-6: 798-814. doi:10.1016/j.humov.2005.10.002


Author Riek, S
Woolley, D
Title Hierarchical organisation of neuro-anatomical constraints in interlimb coordination
Journal name Human Movement Science   Check publisher's open access policy
ISSN 0167-9457
Publication date 2005-01-01
Year available 2005
Sub-type Article (original research)
DOI 10.1016/j.humov.2005.10.002
Volume 24
Issue 5-6
Start page 798
End page 814
Total pages 17
Editor P.J. Beek
P. van Wieringen
Place of publication Amsterdam
Publisher Elsevier BV
Language eng
Subject C1
780108 Behavioural and cognitive sciences
321403 Motor Control
Abstract Based on the observation that bimanual finger tapping movements tend toward mirror symmetry with respect to the body midline, despite the synchronous activation of non-homologous muscles, F. Mechsner, D. Kerzel, G. Knoblich, and W. Prinz (2001) [Perceptual basis of bimanual coordination. Nature, 414, 69-73] suggested that the basis of rhythmic coordination is purely spatial/perceptual in nature, and independent of the neuro-anatomical constraints of the motor system. To investigate this issue further, we employed a four finger tapping task similar to that used by F. Mechsner and G. Knoblich (2004) [Do muscle matter in bimanual coordination? Journal of Experimental Psychology: Human Perception and Performance, 30, 490-503] in which six male participants were required to alternately tap combinations of adjacent pairs of index (1), middle (M) and ring (R) fingers of each hand in time with an auditory metronome. The metronome pace increased continuously from 1 Hz to 3 Hz over the course of a 30-s trial. Each participant performed three blocks of trials in which finger combination for each hand (IM or MR) and mode of coordination (mirror or parallel) were presented in random order. Within each block, the right hand was placed in one of three orientations; prone, neutral and supine. The order of blocks was counterbalanced across the six participants. The left hand maintained a prone position throughout the experiment. On the basis of discrete relative phase analyses between synchronised taps, the time at which the initial mode of coordination was lost was determined for each trial. When the right hand was prone, transitions occurred only from parallel symmetry to mirror symmetry, regardless of finger combination. In contrast, when the right hand was supine, transitions occurred only from mirror symmetry to parallel but no transitions were observed in the opposite direction. In the right hand neutral condition, mirror and parallel symmetry are insufficient to describe the modes of coordination since the hands are oriented orthogonally. When defined anatomically, however, the results in each of the three right hand orientations are consistent. That is, synchronisation of finger tapping is deter-mined by a hierarchy of control of individual fingers based on their intrinsic neuro-mechanical properties rather than on the basis of their spatial orientation. (c) 2005 Elsevier B.V. All rights reserved.
Keyword Neurosciences
Psychology
Sport Sciences
Psychology, Experimental
Bimanual Coordination
Mirror Symmetry
Finger Tapping
Finger Control
Hand Posture
Neuromuscular-skeletal Constraints
Supplementary Motor Area
Finger Movements
Rhythmic Movements
Ipsilateral Hand
Dynamics
Perception
Cortex
Foot
Q-Index Code C1
Institutional Status UQ

 
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Created: Wed, 15 Aug 2007, 16:42:01 EST