Methods: Sphenoidal electrodes and HV were done and the epileptiform discharges recording were analysed in 33 children who with normal or non-specific change EEG.

• 方法:对33例常规脑电图(EEG)正常或无特异性改变的患儿进行了蝶骨电极加过度换气试验(HV)描记后出现痫样放电的病例进行分析。