Combining observation and imagery of an action enhances human corticospinal excitability
Combining observation and imagery of an action enhances human corticospinal excitability
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DOI：
10.1016/j.neures.2009.05.003
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发表时间：
2009-09-01
影响因子：
2.9
通讯作者：
Kanosue, Kazuyuki
中科院分区：
文献类型：
--
作者：
Sakamoto, Masanori;Muraoka, Tetsuro;Kanosue, Kazuyuki
本研究调查了将某个动作的观察和想象相结合是否比单独执行任一操作的效果更能增加皮质脊髓的兴奋性。在观察、想象或两者期间对运动皮层进行经颅磁刺激后，通过肱二头肌的运动诱发电位来评估皮质脊髓兴奋性。使用的动作是重复肘部弯曲/伸展。与单独观察或想象期间记录的记录相比，同时观察和想象肘部动作促进了皮质脊髓兴奋性。然而，当参与者在观察异相呈现的相同动作时想象动作模式时，并没有获得由于观察和想象的结合而带来的促进作用。这些发现表明，观察和想象的结合可以增强皮质脊髓的兴奋性。这种增强取决于观察到的动作和想象的动作之间的相位一致性。 (C) 2009 Elsevier Ireland Ltd 和日本神经科学学会。保留所有权利。
The present study investigated whether combining observation and imagery of an action increased corticospinal excitability over the effects of either manipulation performed alone. Corticospinal excitability was assessed by motor-evoked potentials in the biceps brachii muscle following transcranial magnetic stimulation over the motor cortex during observation, imagery or both. The action utilized was repetitive elbow flexion/extension. Simultaneous observation and imagery of the elbow action facilitated corticospinal excitability as compared to that recorded during observation or imagery alone. However, facilitation due to the combination of observation and imagery was not obtained when the participants imagined the action pattern while they observed the same action presented out of phase. These findings suggest that a combination of observation and imagery can enhance corticospinal excitability. This enhancement depends on phase consistency between the observed and imagined actions. (C) 2009 Elsevier Ireland Ltd and the Japan Neuroscience Society. Ail rights reserved.