在模拟火星重力条件下双臂力量控制的内在和附带限制因素的影响

IF 1.6 3区 心理学 Q4 NEUROSCIENCES Human Movement Science Pub Date : 2024-03-21 DOI:10.1016/j.humov.2024.103199
Yiyu Wang , Osmar P. Neto , Madison Weinrich , Renee Abbott , Ana Diaz-Artiles , Deanna M. Kennedy
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引用次数: 0

摘要

协调肢体之间行动的能力对于许多与太空探索相关的操作任务非常重要。未来太空探索的一个里程碑是将人类送上火星。因此,我们设计了一项实验,以研究在模拟火星重力下双臂控制力的稳定性特征受到固有和偶然限制的影响。实验采用抬头倾斜(HUT)/低头倾斜(HDT)范式模拟火星重力(22.3° HUT)。右侧肢体占优势的参与者(11 人)需要通过左右肢体施力,以 1:1 同相和 1:2 多频模式有节奏地协调等长力模式。同时提供利萨如斯(Lissajous)显示以指导任务执行。参与者在 90° HUT(地球)位置进行了 14 次为期 20 秒的练习。休息 30 分钟后,参与者在地球和火星两种条件下对每种协调模式进行 2 次测试试验。对测试期间的表现进行了比较。结果表明,在两种重力条件下,目标协调任务的时间表现都非常有效。然而,结果表明,地球和火星在产生力方面存在差异。一般来说,参与者在模拟火星重力条件下产生的力小于地球条件下产生的力。此外,火星引力比地球引力下双肢产生的力更和谐,这表明火星条件下的力失真(调整、犹豫和/或扰动)比地球条件下少。力的连贯性分析表明,在 1:1 任务中,所有力频段的连贯性都明显高于 1:2 任务,在两种重力条件下,1-4 赫兹频段的连贯性最高。1-4赫兹频段的高一致性与同时激活两臂的共同神经驱动有关,也符合两项任务的要求。这些结果也支持神经串扰能稳定 1:1 同相任务表现的观点。此外,在 8-12 Hz 频段观察到的一致性,地球状态明显高于火星状态。8-12 Hz 频段的力连贯性与感觉运动信息的处理有关,这表明与火星状态相比,地球状态下的参与者更善于整合视觉、本体感觉和/或触觉反馈。总体而言,结果表明火星引力对神经的干扰较小;然而,在地球引力条件下,参与者似乎能更有效地利用利萨如斯显示来指导运动表现。
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The effect of inherent and incidental constraints on bimanual force control in simulated Martian gravity

The ability to coordinate actions between the limbs is important for many operationally relevant tasks associated with space exploration. A future milestone in space exploration is sending humans to Mars. Therefore, an experiment was designed to examine the influence of inherent and incidental constraints on the stability characteristics associated with the bimanual control of force in simulated Martian gravity. A head-up tilt (HUT)/head-down tilt (HDT) paradigm was used to simulate gravity on Mars (22.3° HUT). Right limb dominant participants (N = 11) were required to rhythmically coordinate patterns of isometric forces in 1:1 in-phase and 1:2 multifrequency patterns by exerting force with their right and left limbs. Lissajous displays were provided to guide task performance. Participants performed 14 twenty-second practice trials at 90° HUT (Earth). Following a 30-min rest period, participants performed 2 test trials for each coordination pattern in both Earth and Mars conditions. Performance during the test trials were compared. Results indicated very effective temporal performance of the goal coordination tasks in both gravity conditions. However, results indicated differences associated with the production of force between Earth and Mars. In general, participants produced less force in simulated Martian gravity than in the Earth condition. In addition, force production was more harmonic in Martian gravity than Earth gravity for both limbs, indicating that less force distortions (adjustments, hesitations, and/or perturbations) occurred in the Mars condition than in the Earth condition. The force coherence analysis indicated significantly higher coherence in the 1:1 task than in the 1:2 task for all force frequency bands, with the highest level of coherence in the 1–4 Hz frequency band for both gravity conditions. High coherence in the 1–4 Hz frequency band is associated with a common neural drive that activates the two arms simultaneously and is consistent with the requirements of the two tasks. The results also support the notion that neural crosstalk stabilizes the performance of the 1:1 in-phase task. In addition, significantly higher coherence in the 8–12 Hz frequency bands were observed for the Earth condition than the Mars condition. Force coherence in the 8–12 Hz bands is associated with the processing of sensorimotor information, suggesting that participants were better at integrating visual, proprioceptive, and/or tactile feedback in Earth than for the Mars condition. Overall, the results indicate less neural interference in Martian gravity; however, participants appear to be more effective at using the Lissajous displays to guide performance under Earth's gravity.

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来源期刊
Human Movement Science
Human Movement Science 医学-神经科学
CiteScore
3.80
自引率
4.80%
发文量
89
审稿时长
42 days
期刊介绍: Human Movement Science provides a medium for publishing disciplinary and multidisciplinary studies on human movement. It brings together psychological, biomechanical and neurophysiological research on the control, organization and learning of human movement, including the perceptual support of movement. The overarching goal of the journal is to publish articles that help advance theoretical understanding of the control and organization of human movement, as well as changes therein as a function of development, learning and rehabilitation. The nature of the research reported may vary from fundamental theoretical or empirical studies to more applied studies in the fields of, for example, sport, dance and rehabilitation with the proviso that all studies have a distinct theoretical bearing. Also, reviews and meta-studies advancing the understanding of human movement are welcome. These aims and scope imply that purely descriptive studies are not acceptable, while methodological articles are only acceptable if the methodology in question opens up new vistas in understanding the control and organization of human movement. The same holds for articles on exercise physiology, which in general are not supported, unless they speak to the control and organization of human movement. In general, it is required that the theoretical message of articles published in Human Movement Science is, to a certain extent, innovative and not dismissible as just "more of the same."
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