But when the emotion that leads to stiffening the lip is more intense, and involves strong muscle tension, facial feedback may heighten emotional response.

Postpartum; Urinary incontinence; Pelvic floor stimulation; Biological feedback; Pelvic floor muscle tension; Treatment.

And the muscles or nerves are stimulated by the current of different frequencies and intensities, as for effect of feedback training, relaxing, strengthening the muscle and treating the disease.