Iida M, Bötzel K, Dieterich M, Krafczyk S, Brandt T, Hitouji K, Igarashi M, Sakai M
Department of Otorhinolaryngology, Tokai University School of Medicine, Isehara, Japan.
ORL J Otorhinolaryngol Relat Spec. 1999 Jan-Feb;61(1):1-5. doi: 10.1159/000027629.
A gentle tap on the forehead evoked short-latency motor responses in the sternocleidomastoid muscle, which may be vestibulocollic reflexes with characteristics similar to those elicited by clicks. We tested this paradigm in subjects standing upright, in order to determine the differential effects of taps on the forehead on the patterns and latencies of spinal stretch and vestibulospinal reflexes, which are important for postural control. Taps on the forehead elicited short-latency inhibitory electromyographic responses in both gastrocnemius muscles with a mean latency of 48.3 +/- 3.1 ms (onset) to 98.3 +/- 6.3 ms (end). Taps on the sternum elicited similar responses from the gastrocnemius muscles, indicating that vestibular stimulation is not essential for eliciting these responses. Both responses may play a role in predetermining the strategy for correcting body perturbations. The actual reflex is probably elicited by somatosensory input from the neck, which converges with vestibular input for the multisensory control of posture.
轻敲前额会在胸锁乳突肌中诱发短潜伏期运动反应，这可能是与点击诱发的反应具有相似特征的前庭脊髓反射。我们在直立站立的受试者中测试了这种模式，以确定前额轻敲对脊髓牵张反射和前庭脊髓反射的模式及潜伏期的不同影响，这些反射对姿势控制很重要。轻敲前额会在双侧腓肠肌中诱发短潜伏期抑制性肌电图反应，平均潜伏期为48.3±3.1毫秒（起始）至98.3±6.3毫秒（结束）。轻敲胸骨会在腓肠肌中诱发类似反应，表明前庭刺激对于诱发这些反应并非必不可少。两种反应可能在预先确定纠正身体扰动的策略中发挥作用。实际反射可能是由来自颈部的体感输入诱发的，该输入与前庭输入汇聚以进行姿势的多感觉控制。
