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Title: Contributions of phase resetting and interlimb coordination to the adaptive control of hindlimb obstacle avoidance during locomotion in rats: a simulation study.
Authors: Aoi, Shinya  kyouindb  KAKEN_id
Kondo, Takahiro
Hayashi, Naohiro
Yanagihara, Dai
Aoki, Sho
Yamaura, Hiroshi
Ogihara, Naomichi
Funato, Tetsuro
Tomita, Nozomi
Senda, Kei  kyouindb  KAKEN_id
Tsuchiya, Kazuo
Author's alias: 青井, 伸也
Keywords: Rat
Obstacle avoidance
Neuromusculoskeletal model
Central pattern generator
Muscle synergy
Phase resetting
Interlimb coordination
Issue Date: Apr-2013
Publisher: Springer-Verlag
Journal title: Biological cybernetics
Volume: 107
Issue: 2
Start page: 201
End page: 216
Abstract: Obstacle avoidance during locomotion is essential for safe, smooth locomotion. Physiological studies regarding muscle synergy have shown that the combination of a small number of basic patterns produces the large part of muscle activities during locomotion and the addition of another pattern explains muscle activities for obstacle avoidance. Furthermore, central pattern generators in the spinal cord are thought to manage the timing to produce such basic patterns. In the present study, we investigated sensory-motor coordination for obstacle avoidance by the hindlimbs of the rat using a neuromusculoskeletal model. We constructed the musculoskeletal part of the model based on empirical anatomical data of the rat and the nervous system model based on the aforementioned physiological findings of central pattern generators and muscle synergy. To verify the dynamic simulation by the constructed model, we compared the simulation results with kinematic and electromyographic data measured during actual locomotion in rats. In addition, we incorporated sensory regulation models based on physiological evidence of phase resetting and interlimb coordination and examined their functional roles in stepping over an obstacle during locomotion. Our results show that the phase regulation based on interlimb coordination contributes to stepping over a higher obstacle and that based on phase resetting contributes to quick recovery after stepping over the obstacle. These results suggest the importance of sensory regulation in generating successful obstacle avoidance during locomotion.
Rights: The final publication is available at
この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1007/s00422-013-0546-6
PubMed ID: 23430278
Appears in Collections:Journal Articles

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