肌电图在临床上主要用以研究下运动神经原疾病及肌病,这已为众所熟知,近来有用以研究某些颅内疾患,包括脑肿瘤的报告。Liveson 等曾检查一例枕骨大孔脑膜瘤患者的双上肢肌电图,发病之初第一次检查正常,但于发病后14个月作第二次检查,则双侧均出现失神经性改变,表现有震颤电位及正相失神经电位。作者认为这种改变可能由于枕骨大孔部位肿瘤导致下颈段血 It is well known that electromyography is primarily used to study lower motor neuron diseases and myopathy in the clinic and has recently been used to study reports of certain intracranial conditions, including brain tumors. Liveson had examined a case of occipital meningioma in patients with upper extremity EMG, the first examination at the onset of normal, but at 14 months after the onset of the second test, the two sides showed loss of neurological changes, Performance of tremor potential and positive phase loss of nerve potential. The authors believe this change may be due to tumor of the foramen magnum leading to lower cervical blood