Vigour of self-paced reaching movement: cost of time and individual traits.

Vigour of self-paced reaching movement: cost of time and individual traits.
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DOI:
10.1038/s41598-018-28979-6
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发表时间:
2018-07-13
期刊:
影响因子:
4.6
通讯作者:
Deroche T
Deroche T
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Berret B;Castanier C;Bastide S;Deroche T

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在日常生活中,人们通常以自己选择的速度移动。然而,人类运动活力形成的基本原理仍然不清楚,特别是考虑到有趣的个体间变异性。有人假设,大脑如何看待时间可能是这种差异的基石,超越了生物力学。在这里,我们专注于自主节奏的达到运动的活力,并通过参与者内的重复测量评估活力的稳定性。我们使用了一种最优控制方法来确定每个参与者活力的时间成本(CoT)函数,考虑运动的生物力学成本模型。然后,我们测试的程度,人体测量或心理特征,即无聊倾向和冲动,可以解释一个显着的一部分,个体间的活力和CoT参数的方差。我们的研究结果表明,达到的活力在很大程度上是特质的,往往证实的相对陡峭的确定CoT和无聊的倾向,一个心理特征相关的一个人的决策与时间的关系之间的关系。
People usually move at a self-selected pace in everyday life. Yet, the principles underlying the formation of human movement vigour remain unclear, particularly in view of intriguing inter-individual variability. It has been hypothesized that how the brain values time may be the cornerstone of such differences, beyond biomechanics. Here, we focused on the vigour of self-paced reaching movement and assessed the stability of vigour via repeated measurements within participants. We used an optimal control methodology to identify a cost of time (CoT) function underlying each participant’s vigour, considering a model of the biomechanical cost of movement. We then tested the extent to which anthropometric or psychological traits, namely boredom proneness and impulsivity, could account for a significant part of inter-individual variance in vigour and CoT parameters. Our findings show that the vigour of reaching is largely idiosyncratic and tend to corroborate a relation between the relative steepness of the identified CoT and boredom proneness, a psychological trait relevant to one’s relationship with time in decision-making.
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