Effect of TDCS Combined with Intraoral Electrical Stimulation

Intraoral induction electrical stimulation therapy (specific method\[13\]: hand-held electrode rods were used to stimulate the mandibular hyoid muscle, digastric muscle, anterior abdomen, and other muscles of the three groups. Parameter setting: the frequency is 80Hz, the wave width is 1ms, the intensity is set to the muscle contraction, each electrical stimulation is 3s, intermittent 10s, 20min/time, 1 time/day, 5 days/week, 4 weeks is limited.

tDCS treatment (specific method: microcurrent stimulator, stimulation electrode (3 cm×4 cm gelatin sponge), anodic stimulation site is the pharyngeal sensorimotor cortex area (between C3/T3 on the left\[14\], between C4/T4 on the right); the supraorbital area is the site of cathodic stimulation. The direct current intensity is 2.0 mA (20 min/time, 2 times/day) for two treatments (respectively, yin and yang alternating treatment), with an interval of at least 1 h, 5 days/week, and 4 weeks.

tDCS combined with intraoral induction electrical stimulation. The patients were first treated with tDCS (the method is the same as that of the control group B) for 20 people twice a day and then given intraoral induction stimulation (the specific method is the same as that of the control group A) for 20 minutes, once a day, for 4 weeks.