探索传入性抑制的行为关联。
Exploring Behavioral Correlates of Afferent Inhibition.
作者信息
Turco Claudia V, Locke Mitchell B, El-Sayes Jenin, Tommerdahl Mark, Nelson Aimee J
机构信息
Department of Kinesiology, McMaster University, Hamilton, ON L8S 4L8, Canada.
Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
出版信息
Brain Sci. 2018 Apr 11;8(4):64. doi: 10.3390/brainsci8040064.
(1) Background: Afferent inhibition is the attenuation of the muscle response evoked from transcranial magnetic stimulation (TMS) by a prior conditioning electrical stimulus to a peripheral nerve. It is unclear whether the magnitude of afferent inhibition relates to sensation and movement; (2) Methods: 24 healthy, young adults were tested. Short-latency afferent inhibition (SAI) and long-latency afferent inhibition (LAI) were obtained following median and digital nerve stimulation. Temporal tactile acuity was assessed with a temporal order judgement (TOJ) task, spatial tactile acuity was assessed using a grating orientation task (GOT), and fine manual dexterity was assessed with the Pegboard task; (3) Results: Correlation analyses revealed no association between the magnitude of SAI or LAI with performance on the TOJ, GOT, or Pegboard tasks; (4) Conclusion: The magnitude of SAI and LAI does not relate to performance on the sensory and motor tasks tested. Future studies are needed to better understand whether the afferent inhibition phenomenon relates to human behavior.
(1) 背景：传入性抑制是指通过预先对周围神经施加条件电刺激，使经颅磁刺激（TMS）诱发的肌肉反应减弱。目前尚不清楚传入性抑制的程度是否与感觉和运动有关；(2) 方法：对24名健康的年轻成年人进行测试。在正中神经和指神经刺激后，获得短潜伏期传入性抑制（SAI）和长潜伏期传入性抑制（LAI）。使用时间顺序判断（TOJ）任务评估时间触觉敏锐度，使用光栅定向任务（GOT）评估空间触觉敏锐度，使用钉板任务评估精细手部灵巧性；(3) 结果：相关性分析显示，SAI或LAI的程度与TOJ、GOT或钉板任务的表现之间无关联；(4) 结论：SAI和LAI的程度与所测试的感觉和运动任务的表现无关。需要进一步的研究以更好地理解传入性抑制现象是否与人类行为有关。
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