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  • Title: Reflex and cortical responses to dental stimuli.
    Author: Cruccu G, Fornarelli M, Inghilleri M, Manfredi M.
    Journal: Ital J Neurol Sci; 1983 Sep; 4(3):309-15. PubMed ID: 6642997.
    Abstract:
    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.
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