Brain activation patterns of motor imagery reflect plastic changes associated with intensive shooting training
Brain activation patterns of motor imagery reflect plastic changes associated with intensive shooting training
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DOI：
10.1016/j.bbr.2012.06.001
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发表时间：
2012-09-01
影响因子：
2.7
通讯作者：
Chang, Yongmin
中科院分区：
文献类型：
--
作者：
Baeck, Jong-Su;Kim, Yang-Tae;Chang, Yongmin
先前研究的证据表明，运动想象和运动动作涉及重叠的大脑系统。由于运动想象可以激活与实际运动相关的大脑区域，运动想象有望提高运动技能表现，并成为体育运动和身体康复中的身体训练的基本原则。然而，很少有研究探讨体育训练对初学者运动想象的影响。此外，很少有人研究训练前后与运动想象相关的神经网络的差异。在目前的研究中，使用功能磁共振成像（fMRI），我们调查的问题，运动想象是否可以反映与密集训练相关的神经相关的可塑性变化。事实上，在这项研究中，运动想象被用作评估参与射击和学习射击的大脑区域的工具。我们发现，使用运动想象导致招聘广泛分布的共同的皮层区域，这被建议发挥作用，在90小时的射击训练前后的心理图像的生成和维护。除了这些共同的领域，大脑激活之前和之后90小时的射击练习表现出区域不同的模式，在皮层下运动区的活动变化。也就是说，基底神经节在射击练习90小时后表现出增加的活性，这表明与性能和强化学习的增益相关的塑性变化的发生。因此，我们的研究结果表明，为了达到一定的专业水平，大脑会在训练期间通过最初强化先前存在的连接来改变，然后通过形成新的连接来使用更集中的神经相关。(C)2012爱思唯尔有限公司版权所有。
Evidence from previous studies has suggested that motor imagery and motor action engage overlapping brain systems. As a result of this observation that motor imagery can activate brain regions associated with actual motor movement, motor imagery is expected to enhance motor skill performance and become an underlying principle for physical training in sports and physical rehabilitation. However, few studies have examined the effects of physical training on motor imagery in beginners. Also, differences in neural networks related to motor imagery before and after training have seldom been studied. In the current study, using functional magnetic resonance imaging (fMRI), we investigated the question of whether motor imagery can reflect plastic changes of neural correlates associated with intensive training. In fact, motor imagery was used in this study as a tool to assess the brain areas involved in shooting and involved in learning of shooting. We discovered that use of motor imagery resulted in recruitment of widely distributed common cortical areas, which were suggested to play a role in generation and maintenance of mental images before and after 90 h of shooting training. In addition to these common areas, brain activation before and after 90 h of shooting practice showed regionally distinct patterns of activity change in subcortical motor areas. That is, basal ganglia showed increased activity after 90 h of shooting practice, suggesting the occurrence of plastic change in association with gains in performance and reinforcement learning. Therefore, our results suggest that, in order to reach a level of expertise, the brain would change through initial reinforcement of preexistent connections during the training period and then use more focused neural correlates through formation of new connections. (C) 2012 Elsevier B.V. All rights reserved.