Stochastic resonance improves visuomotor temporal integration in healthy young adults
Stochastic resonance improves visuomotor temporal integration in healthy young adults
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DOI：
10.1371/journal.pone.0209382
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发表时间：
2018-12-14
期刊：
影响因子：
3.7
通讯作者：
Morioka, Shu
中科院分区：
文献类型：
--
作者：
Nobusako, Satoshi;Osumi, Michihiro;Morioka, Shu
已知对身体的机械和电噪声刺激可改善感觉运动系统。这种改善与随机共振（SR）有关，这种现象被描述为对各种感觉和运动系统的“噪音益处”。本研究探讨了延迟视觉反馈条件下SR对健康青年视觉时间整合和手运动功能的影响。本研究的目的是衡量的有用性SR作为一种神经康复设备的障碍，视颞整合。30名健康志愿者在延迟视觉反馈下进行检测任务和手部运动功能测试，有或没有SR。在30名参与者中，15名在延迟视觉反馈下按SR开条件，关条件，关条件和开条件的顺序进行任务。其余15名参与者按照SR关闭条件、打开条件、打开条件和关闭条件的顺序进行实验任务。延迟检测阈值（DDT），延迟检测概率曲线的陡度，框和块测试（BBT）的分数，和九孔钉测试（NHPT）的分数之间的SR的开和关条件进行了比较。与SR关断条件相比，SR导通条件下的DDT显著缩短。SR开启和关闭条件下延迟检测概率曲线的陡峭度、BBT评分和NHPT评分无显著差异。SR改善了健康年轻人的视觉时间整合，因此可能改善视觉时间整合受损患者的运动障碍。然而，由于目前的研究结果表明，SR没有改善手运动功能的延迟视觉反馈，它可能不会改善运动功能时，一个大的失真的视觉时间整合存在。考虑到目前研究的几个局限性，需要进一步的研究，未来的临床试验是必要的，以验证运动训练的效果，使用SR治疗视觉-时间整合障碍。
Mechanical and electrical noise stimulation to the body is known to improve the sensorimotor system. This improvement is related to stochastic resonance (SR), a phenomenon described as a "noise benefit" to various sensory and motor systems. The current study investigated the influence of SR on visuomotor temporal integration and hand motor function under delayed visual feedback in healthy young adults. The purpose of this study was to measure the usefulness of SR as a neurorehabilitation device for disorders of visuomotor temporal integration. Thirty healthy volunteers underwent detection tasks and hand motor function tests under delayed visual feedback, with or without SR. Of the 30 participants, 15 carried out the tasks under delayed visual feedback in the order of SR on-condition, off-condition, off-condition, and on-condition. The remaining 15 participants conducted the experimental tasks in the order of SR off-condition, on-condition, on-condition, and off-condition. Comparisons of the delay detection threshold (DDT), steepness of the delay detection probability curves, box and block test (BBT) scores, and nine-hole peg test (NHPT) scores between the SR on- and off-conditions were performed. The DDT under the SR on-condition was significantly shortened compared with the SR off-condition. There was no significant difference between the SR on- and off-conditions for the steepness of the delay detection probability curves, BBT scores, and NHPT scores. SR improved visuomotor temporal integration in healthy young adults, and may therefore improve movement disorders in patients with impaired visuomotor temporal integration. However, because the current results showed that SR did not improve hand motor function under delayed visual feedback, it may not improve motor function when a large distortion of visuomotor temporal integration is present. Further studies are required considering several limitations of the current study, and future clinical trials are necessary to verify the effects of motor training using SR for the treatment of visuomotor temporal integration disorders.