論文

査読有り 筆頭著者 国際誌
2022年1月18日

Preceding Postural Control in Forelimb Reaching Movements in Cats

Frontiers in Systems Neuroscience
  • Mirai Takahashi
  • ,
  • Toshi Nakajima
  • ,
  • Kaoru Takakusaki

15
開始ページ
792665
終了ページ
792665
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.3389/fnsys.2021.792665
出版者・発行元
Frontiers Media SA

Postural control precedes the goal-directed movement to maintain body equilibrium during the action. Because the environment continuously changes due to one’s activity, postural control requires a higher-order brain function that predicts the interaction between the body and the environment. Here, we tried to elucidate to what extent such a preceding postural control (PPC) predictively offered a posture that ensured the entire process of the goal-directed movement before starting the action. For this purpose, we employed three cats, which we trained to maintain a four-leg standing posture on force transducers to reach the target by either forelimb. Each cat performed the task under nine target locations in front with different directions and distances. As an index of posture, we employed the center of pressure (CVP) and examined CVP positions when the cat started postural alteration, began to lift its paw, and reached the target. After gazing at the target, each cat started PPC where postural alteration was accompanied by a 20–35 mm CVP shift to the opposite side of the forelimb to be lifted. Then, the cat lifted its paw at the predicted CVP position and reached the forelimb to the target with a CVP shift of only several mm. Moreover, each cat had an optimal target location where the relationship between the cat and target minimized the difference in the CVP positions between the predicted and the final. In this condition, more than 80% of the predicted CVP positions matched the final CVP positions, and the time requiring the reaching movement was the shortest. By contrast, the forelimb reaching movement required a greater CVP shift and longer time when the target was far from the cat. In addition, the time during forelimb reaching showed a negative correlation with the speed of the CVP shift during the PPC. These results suggest that the visuospatial information, such as the body-environment interaction, contributes to the motor programming of the PPC. We conclude that the PPC ensures postural stability throughout the action to optimize the subsequent goal-directed movements. Impairments in these processes may disturb postural stability during movements, resulting in falling.

リンク情報
DOI
https://doi.org/10.3389/fnsys.2021.792665
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/35115911
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8805610
共同研究・競争的資金等の研究課題
姿勢制御の最適化を実現する高次脳機能メカニズムの解明
共同研究・競争的資金等の研究課題
神経伝達物質の異常に伴う超適応を誘発する脳活動ダイナミクスの変容
共同研究・競争的資金等の研究課題
姿勢-歩行戦略の変更に伴う脳適応機能の解明
URL
https://www.frontiersin.org/articles/10.3389/fnsys.2021.792665/full
ID情報
  • DOI : 10.3389/fnsys.2021.792665
  • eISSN : 1662-5137
  • PubMed ID : 35115911
  • PubMed Central 記事ID : PMC8805610

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