Pink noise promotes sooner state transitions during bimanual coordination

• 成果类型: Article
• 署名作者: Brink, Kolby J.; Kim, Seung Kyeom; Sommerfeld, Joel H.; Amazeen, Polemnia G.; Stergiou, Nikolaos; Likens, Aaron D.
• 署名单位: University of Nebraska System; Arizona State University; Arizona State University-Tempe; Aristotle University of Thessaloniki
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-9082
• DOI: 10.1073/pnas.2400687121
• 发表日期: 2024-07-30
• 关键词: improved arterial oxygenation; relative phase; postural control; gait variability; porcine model; older-adults; 1/f noise; DYNAMICS; fluctuations; STABILITY

摘要

The seemingly straightforward task of tying one's shoes requires a sophisticated interplay of joints, muscles, and neural pathways, posing a formidable challenge for researchers studying the intricacies of coordination. A widely accepted framework for measuring coordinated behavior is the Haken-Kelso-Bunz (HKB) model. However, a significant limitation of this model is its lack of accounting for the diverse variability structures inherent in the coordinated systems it frequently models. Variability is a pervasive phenomenon across various biological and physical systems, and it changes in healthy adults, older adults, and pathological populations. Here, we show, both empirically and with simulations, that manipulating the variability in coordinated movements significantly impacts the ability to change coordination patterns-a fundamental feature of the HKB model. Our results demonstrate that synchronized bimanual coordination, mirroring a state of healthy variability, instigates earlier transitions of coordinated movements compared to other variability conditions. This suggests a heightened adaptability when movements possess a healthy variability. We anticipate our study to show the necessity of adapting the HKB model to encompass variability, particularly in predictive applications such as neuroimaging, cognition, skill development, biomechanics, and beyond.