The functional role of post-movement beta oscillations in motor termination.
The functional role of post-movement beta oscillations in motor termination.
复制标题
运动后β振荡在运动终止中的功能作用。
DOI：
10.1007/s00429-017-1387-1
复制
发表时间：
2017-09
影响因子：
3.1
通讯作者：
Wilson TW
中科院分区：
文献类型：
--
作者：
Heinrichs-Graham E;Kurz MJ;Gehringer JE;Wilson TW
在运动终止后不久，人类感觉运动网络中的β节律（15-30 Hz）强烈增加或增强，称为运动后β反弹（PMBR）。这种反应与运动完成后运动网络的主动抑制、感觉运动皮层的感觉传入和其他功能有关。然而，直接探讨PMBR在运动执行中的作用的研究报告了混合的结果，可能是由于总运动输出量和/或运动复杂性的差异。在此，我们使用脑磁图（MEG）在等距力控制任务，以检查是否在电机终止的时间要求调制PMBR的变化，独立于电机输出本身的差异。简单地说，我们操纵了启动力的提示和终止力的提示之间的时间量，这样参与者就被迫快速或缓慢地终止。我们还进行了对照实验，以测试时间的可预测性的影响。我们的研究结果表明，PMBR是更强的运动终止后立即在前额叶皮质，辅助运动区，左中央后回，中央旁小叶，顶叶皮质时，参与者被迫终止更快。这些结果不能归因于每种情况的时间可预测性。这些研究结果支持的概念，PMBR响应至少部分地服务于电机抑制，独立于电机输出本身内的参数，电机网络的特定节点可以通过电机终止差分调制。
Shortly after movement termination, there is a strong increase or resynchronization of the beta rhythm (15–30 Hz) across the sensorimotor network of humans, known as the post-movement beta rebound (PMBR). This response has been associated with active inhibition of the motor network following the completion of a movement, sensory afferentation of the sensorimotor cortices, and other functions. However, studies that have directly probed the role of the PMBR in movement execution have reported mixed results, possibly due to differences in the amount of total motor output and/or movement complexity. Herein, we used magnetoencephalography (MEG) during an isometric-force control task to examine whether alterations in the timing of motor termination demands modulate the PMBR, independent of differences in the motor output itself. Briefly, we manipulated the amount of time between the cue to initiate the force and the cue to terminate the force, such that participants were either forced to terminate quickly or slowly. We also performed a control experiment to test for temporal predictability effects. Our results indicated that the PMBR was stronger immediately following movement termination in the prefrontal cortices, supplementary motor area, left postcentral gyrus, paracentral lobule, and parietal cortex when participants were forced to terminate more quickly. These results were not attributable to the temporal predictability of each condition. These findings support the notion that the PMBR response at least partially serves motor inhibition, independent of parameters within the motor output itself, and that particular nodes of the motor network may be differentially modulated by motor termination.
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DOI：
10.1016/j.nicl.2017.02.010
发表时间：
2017
期刊：
NeuroImage. Clinical
影响因子：
--
作者：
Heinrichs-Graham E;Santamaria PM;Gendelman HE;Wilson TW
通讯作者：
Wilson TW
影响因子：
5.7
作者：
Jurkiewicz, Michael T.;Gaetz, William C.;Cheyne, Douglas
通讯作者：
Cheyne, Douglas
DOI：
10.1177/1073858414525995
发表时间：
2014-12
期刊：
The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry
影响因子：
--
作者：
Cole MW;Repovš G;Anticevic A
通讯作者：
Anticevic A
影响因子：
2.5
作者：
Muthukumaraswamy, Suresh D.
通讯作者：
Muthukumaraswamy, Suresh D.
影响因子：
4.7
作者：
Pfurtscheller, G.;Solis-Escalante, T.
通讯作者：
Solis-Escalante, T.