Comparing the attractor strength of intra- and interpersonal interlimb coordination using cross-recurrence analysis

Michael J. Richardson, Stacy Lopresti-Goodman, Marisa Mancini, Bruce Kay, R. C. Schmidt

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Previous research has demonstrated that intra- and interpersonal rhythmic interlimb coordination are both constrained by the self-organizing entrainment process of coupled oscillators. Despite intra- and interpersonal coordination exhibiting the same stable macroscopic movement patterns the variability of the coordination is typically found to be much greater for inter- compared to intrapersonal coordination. Researchers have assumed that this is due to the interpersonal visual-motor coupling producing a weaker attractor dynamic than the intrapersonal neuromuscular coupling. To determine whether this assumption is true, two experiments were conducted in which pairs of participants coordinated hand-held pendulums swung about the wrist, either intra- and interpersonally. Using the cross-recurrence statistics of percent recurrence and maxline to independently index the level of noise and the attractor strength of the coordination, respectively, the results confirmed that the attractor strength was significantly weaker for inter- compared to intrapersonal coordination and that a similar magnitude of noise underlies both.
Original languageEnglish
Pages (from-to)340-345
Number of pages6
JournalNeuroscience Letters
Volume438
Issue number3
DOIs
Publication statusPublished - Jun 2008
Externally publishedYes

Keywords

  • interlimb coordination
  • interpersonal coordination
  • movement stability
  • cross-recurrence analysis

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