Fig. 1
From: Iatrogenic damage to the mandibular nerves as assessed by the masseter inhibitory reflex
Masseter inhibitory reflex (MIR) in patients with iatrogenic damage to the mandibular nerves. Left column inferior alveolar dental nerve testing. Right column lingual nerve testing. Top schematic drawings showing cathode (−) and anode (+) electrodes position for stimulation of the mental nerve (a) and tongue (b). Midand bottom traces early (SP1) and late (SP2) components of the MIR after contralateral and affected side stimulations in two representative subjects. Eight trials were superimposed. Calibration 20 ms/200 μV. Arrows indicate normal latency. Note that on the affected side the SP1 response is slightly delayed after mental stimulation and it is almost completely absent after tongue stimulation