Cruccu G, Fornarelli M, Inghilleri M, Manfredi M
Ital J Neurol Sci. 1983 Sep;4(3):309-15. doi: 10.1007/BF02043484.
Tooth pulp stimulation may evoke reflex responses in the orbicularis oculi, temporal, masseter and retronuchal muscles, which may to a varying degree contaminate the cortical evoked responses. The use of repetitive stimulation reduces the amplitude of the cortical responses but avoids the onset of the majority of the muscle reflexes. The appearance of a silent period in the temporal muscle is hard to avoid and it alters the signal recorded from S1 for the first 60-70 msec. In the center-posterior leads, more protected from the EMG signal of the temporal muscle, a first negative deflection is recorded at 43 msec in 60% of subjects.
牙髓刺激可能会引起眼轮匝肌、颞肌、咬肌和项部肌肉的反射反应，这些反应可能在不同程度上干扰皮质诱发反应。使用重复刺激会降低皮质反应的幅度，但可避免大多数肌肉反射的出现。颞肌中出现静息期很难避免，并且它会在最初60 - 70毫秒改变从S1记录到的信号。在中央后导联中，受颞肌肌电图信号干扰较小，60%的受试者在43毫秒时记录到第一个负向偏转。
