Motor transfer from the corticospinal to the corticobulbar pathway.
Motor transfer from the corticospinal to the corticobulbar pathway.
复制标题
从皮质脊髓到皮质延髓通路的运动转移。
DOI：
10.1016/j.physbeh.2018.04.016
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发表时间：
2018
影响因子：
2.9
通讯作者：
Humbert,IanessaA
中科院分区：
文献类型：
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作者：
Ernster,AlaynaE;Park,SeoungHoon;Yacoubi,Basma;Christou,EvangelosA;Casamento-Moran,Agostina;Singer,MicheleL;Humbert,IanessaA
存在多个下行神经通路，包括皮质脊髓通路（CS）和皮质延髓通路（CB）。皮质脊髓通路已被证明表现出通路内（CS到CS）运动转移。然而，跨每一个路径（CS到CB或CB到CS）的运动转移还有待深入研究。本研究的目的是检查的效果之间的踝关节（CS）和舌头（CB）的跨通路运动转移训练后，弹道目标导向的运动任务。招募了12名健康参与者进行为期两天的实验研究。6名参与者在第1天用踝关节（踝关节背屈）执行弹道目标导向任务，然后在第2天用舌头（抬高舌头对抗IOPI）。其他6名参与者在第1天用舌头执行相同的任务，然后在第2天用脚踝执行相同的任务。脚踝和舌头的任务（各50次试验）都需要与视觉目标相匹配的力量和时间。我们的研究结果表明，与在第1天完成舌头训练的参与者相比，在第1天接受脚踝训练的参与者在第2天表现出更低的舌头力误差，而之前没有进行脚踝训练（p = 0.02）（即更高的准确性）。这一发现表明，从皮质脊髓通路到皮质延髓通路的跨通路转移发生在力误差方面。换句话说，踝关节（CS）的训练通过力误差的减少转化为舌头（CB）的训练性能的改善。然而，反过来是不正确的-训练舌头并没有引起脚踝的性能改善。尽管如此，如果皮质脊髓通路的训练可以改善皮质延髓通路的功能，那么结合多通路康复技术对跨学科的临床医生来说可能是有价值的。
There are multiple descending neural pathways, including the corticospinal pathway (CS) and the corticobulbar pathway (CB). The corticospinal pathway has been shown to exhibit within-pathway (CS-to-CS) motor transfer. However, motor transfer across each pathway (CS-to-CB or CB-to-CS) has yet to be studied in depth. The aim of the present study was to examine the effects of cross-pathway motor transfer between the ankle (CS) and tongue (CB) after training with a ballistic goal-directed motor task. Twelve healthy participants were recruited for this two-day experimental study. Six participants performed a ballistic goal-directed task with their ankle on Day 1 (ankle dorsiflexion), then tongue on Day 2 (elevate tongue against IOPI). The other 6 participants performed the same task with their tongue on Day 1, then ankle on Day 2. Both the ankle and tongue tasks (50 trials each) required matching force and time to a visual target. Our findings indicate that participants who underwent ankle training on Day 1 exhibited decreased tongue force error on Day 2 compared with participants who completed the tongue training on Day 1, with no prior ankle training (p = 0.02) (i.e. greater accuracy). This finding suggests that cross-pathway transfer from the corticospinal pathway to the corticobulbar pathway occurred with respect to force error. In other words, training of the ankle (CS) translated to improved training performance of the tongue (CB) through a reduction in force error. However, the reverse was not true – training the tongue did not elicit improved performance of the ankle. Nonetheless, if training with the corticospinal pathway can lead to improved corticobulbar pathway functioning, incorporating multi-pathway rehabilitation techniques might be valuable for clinicians across medical disciplines.