The Characteristic of Axial Pain and EEG Analysis of Patients After Laminoplasty

Inclusion Criteria: * Age: 18\~70 years. * Diagnosed as degenerative cervical spine myelopathy. * Must receive C3-C7 open-door laminoplasty. * Agree to join this study and sign the informed consent. Exclusion Criteria: * Severe cervical spine kyphosis. * Cervical spine radiculopathy. * Laminoplasty with fusion. * Cervical spine anterior column lesion because of tumor, trauma or infection. * Severe osteoporosis. * Morbid obesity. * patients with mental disorder. * Pregnancy. * History of infection within last 3 months. * Severe nervous system disease. * Abnormal laboratory report of liver function, kidney function and hematologic system. * Poor compliance. * Patients with other surgical contraindications. * Patients with intemperance or taking drugs. * Patients who joined other study within the last 3 months. * Patients with a chief complaint of neck pain (VAS score ≥3 points). * Left handedness.