Willer J C, Boulu P, Bratzlavsky M
J Neurol Neurosurg Psychiatry. 1984 Jan;47(1):87-90. doi: 10.1136/jnnp.47.1.87.
A crossed short latency component (R1) of the human blink reflex could be elicited in orbicularis oculi muscles to stimulation of the contralateral supraorbital nerve, when infraliminal conditioning stimuli were applied to various cutaneous afferents of the body (facial, upper and lower limbs). The crossed R1 responses appeared when the time interval between the conditioning and the test stimuli was of 30 to 40 ms, 50 to 65 ms and 95 to 110 ms for facial, upper and lower limbs afferents respectively. For the same time intervals, these conditioning volleys also exerted a facilitatory effect on the ipsilateral R1 responses. Furthermore, crossed R1 responses were also obtained during supraspinal facilitation induced by a voluntary contraction of the eyelids. These data show that crossed oligosynaptic trigemino-facial reflex connections exist in normal subjects, which become functional when adequate conditioning stimuli are available.
当阈下条件刺激施加于身体的各种皮肤传入神经（面部、上肢和下肢）时，刺激对侧眶上神经可在眼轮匝肌引出人类瞬目反射的交叉短潜伏期成分（R1）。对于面部、上肢和下肢传入神经，当条件刺激与测试刺激之间的时间间隔分别为30至40毫秒、50至65毫秒和95至110毫秒时，交叉R1反应出现。在相同的时间间隔内，这些条件性冲动对同侧R1反应也有促进作用。此外，在眼睑自主收缩引起的脊髓上促进过程中也获得了交叉R1反应。这些数据表明，正常受试者存在交叉的少突触三叉神经-面部反射连接，当有足够的条件刺激时这些连接开始发挥作用。
