Two heads are better than one: both complementary and synchronous strategies facilitate joint action
Two heads are better than one: both complementary and synchronous strategies facilitate joint action
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DOI：
10.1152/jn.00776.2012
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发表时间：
2013-03-01
影响因子：
2.5
通讯作者：
Inui, Nobuyuki
中科院分区：
文献类型：
--
作者：
Masumoto, Junya;Inui, Nobuyuki
Masumoto J，Inui N.两个脑袋胜过一个脑袋：互补和同步的战略都有助于联合行动。J Neurophysiol 109：1307-1314，2013.首次发表于2012年12月5日; doi：10.1152/jn.00776.2012.-如果两个人举起并携带一个物体，他们不仅会在物体上产生互补的力，而且会同步行走。以往的研究没有考察两种类型的协调策略是如何同时被采用的。因此，本研究验证了这一假设，即互补和同步策略同时促进两个人的行动协调。10对参与者产生周期性等长力，使得他们产生的力的总和是目标力，其在最大自主收缩的5%和10%之间循环，间隔为1,000 ms（联合动作），而单独的个体用右手产生相同的目标力（个体动作）。当总力可见时，两个参与者产生的力之间的相关性是高度负的，这表明两个参与者产生了互补的力。当呈现合力或伙伴力的图像时，两个参与者产生的力-时间序列之间的一致性在1 Hz时最高。相对相位角也分布在0-20度相位区。这些创新性的发现表明，两个参与者同时采用互补和时间同步策略时，总的力量是可见的。令人惊讶的是，在合力的视野中，虽然联合作用比单独作用表现出更小的力的变化，但联合作用比单独作用表现出更小的力的绝对误差。这些新的发现表明，联合行动比个人行动更准确地控制力。
Masumoto J, Inui N. Two heads are better than one: both complementary and synchronous strategies facilitate joint action. J Neurophysiol 109: 1307-1314, 2013. First published December 5, 2012; doi:10.1152/jn.00776.2012.-If two people lift and carry an object, they not only produce complementary forces on the object but also walk in synchrony. Previous studies have not examined how two types of coordination strategy are adopted simultaneously. The present study thus tested the hypothesis that complementary and synchronous strategies simultaneously facilitate the action coordination performed by two people. Ten pairs of participants produced periodic isometric forces such that the sum of forces they produced was the target force cycling between 5% and 10% of maximum voluntary contraction with an interval of 1,000 ms (joint action), while individuals alone produced the same target forces with the right hand (individual action). The correlation between forces produced by two participants was highly negative when the total force was visible, indicating that the two participants produced complementary forces. When the image of the total or partner force was presented, the coherence between force-time series produced by two participants was highest at 1 Hz. The relative phase angles were also distributed at the 0-20 degrees phase region. These innovative findings indicate that two participants simultaneously adopted both complementary and temporal synchronous strategies exclusively when the total force was visible. With the vision of total force, surprisingly, while the joint action exhibited a less variable force than the individual action, the joint action exhibited a smaller absolute error of forces than the individual action. These new findings indicated that the joint action controlled force more accurately than the individual action.