F-waves induced by motor point stimulation are facilitated during handgrip and motor imagery tasks
F-waves induced by motor point stimulation are facilitated during handgrip and motor imagery tasks
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在握力和运动想象任务中促进运动点刺激诱发的 F 波
DOI：
10.1007/s00221-022-06537-x
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发表时间：
2023
影响因子：
2
通讯作者：
Masani Kei
中科院分区：
文献类型：
--
作者：
Kaneko Naotsugu;Sasaki Atsushi;Fok Kai Lon;Yokoyama Hikaru;Nakazawa Kimitaka;Masani Kei
F波是由周围神经的电刺激引起的运动神经的逆向放电引起的运动反应，反映了运动神经元池的兴奋性。然而，F波通常具有低鲁棒性，即低持续性和小振幅。我们最近发现，为肌腹提供电刺激的运动点刺激（MPS）与神经刺激相比表现出不同的神经反应，例如，MPS 比神经刺激更强烈地引发 F 波。在这里，我们研究了 MPS 诱导的 F 波是否可以识别握力和运动想象过程中运动神经元池兴奋性的变化。十二名参与者参与了本研究。我们在他们的比目鱼肌上应用 MPS，并记录睁眼 (EO)、闭眼 (EC)、握力 (HG) 和运动想象 (MI) 条件下的 F 波。在 EO 和 EC 条件下，参与者分别睁眼和闭眼放松。在 HG 中，参与者通过视觉反馈将握力水平与最大自愿力的 30% 相匹配。在 MI 中，他们闭着眼睛以最大强度进行跖屈的动觉 MI。在 HG 和 MI 中，MPS 诱导的 F 波振幅分别比 EO 和 EC 中增加。这些结果表明，在 HG 和 MI 条件下运动神经元池的兴奋性得到促进，这与之前的研究结果一致。我们的研究结果表明，MPS 引发的 F 波可以成为人类神经生理学中评估认知和运动任务期间运动神经元池兴奋性的良好工具。
The F-wave is a motor response elicited via the antidromic firings of motor nerves by the electrical stimulation of peripheral nerves, which reflects the motoneuron pool excitability. However, the F-wave generally has low robustness i.e., low persistence and small amplitude. We recently found that motor point stimulation (MPS), which provides the muscle belly with electrical stimulation, shows different neural responses compared to nerve stimulation, e.g., MPS elicits F-waves more robustly than nerve stimulation. Here, we investigated whether F-waves induced by MPS can identify changes in motoneuron pool excitability during handgrip and motor imagery. Twelve participants participated in the present study. We applied MPS on their soleus muscle and recorded F-waves during eyes-open (EO), eyes-closed (EC), handgrip (HG), and motor imagery (MI) conditions. In the EO and EC conditions, participants relaxed with their eyes open and closed, respectively. In the HG, participants matched the handgrip force level to 30% of the maximum voluntary force with visual feedback. In the MI, they performed kinesthetic MI of plantarflexion at the maximal strength with closed eyes. In the HG and MI, the amplitudes of the F-waves induced by MPS were increased compared with those in the EO and EC, respectively. These results indicate that the motoneuron pool excitability was facilitated during the HG and MI conditions, consistent with findings in previous studies. Our findings suggest that F-waves elicited by MPS can be a good tool in human neurophysiology to assess the motoneuron pool excitability during cognitive and motor tasks.
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周期性或离散重复运动后前角细胞的兴奋性
影响因子：
3.4
作者：
Mastaka Kurobe;Hiroyuki Matsubata;Toshiaki Suzuki
通讯作者：
Toshiaki Suzuki
感觉运动事件相关的去同步化代表了人类脊髓运动神经元的兴奋性
影响因子：
3.3
作者：
M. Takemi;Y. Masakado;Meigen Liu;J. Ushiba
通讯作者：
J. Ushiba
人类脊髓的回路：脊髓和皮质脊髓的运动机制
DOI：
--
发表时间：
2015
期刊：
The Yale Journal of Biology and Medicine
影响因子：
--
作者：
Audrey Turchick
通讯作者：
Audrey Turchick
影响因子：
4.2
作者：
Stein, Richard B.;Everaert, Dirk G.;Kuether, Gerald
通讯作者：
Kuether, Gerald
影响因子：
3
作者：
MILANOV, IG
通讯作者：
MILANOV, IG