A study on circadian rhythm of interictal epileptiform discharges in patients with localization related epilepsy / 中华行为医学与脑科学杂志

ABSTRACT

Objective To investigate the effects of circadian rhythm on interictal epileptiform discharges in patients with localization-related epilepsy.Methods Patients diagnosed with epilepsy in Sanbo Brain Hospital from January 2011 to January 2012 participated in this study.All patients were subjected to comprehensive evaluation,which included prolonged video-electroencephalogram (EEG),magnetic resonance imaging.Intracranial electrodes,PET,SPECT were also adopted if necessary.Circadian rhythm was divided into four stages:REM,NREM Ⅰ-Ⅱ,NREM Ⅲ-Ⅳ,and waking.The amount and distribution of ⅡD were compared by ANOVA.Results Significant differences in the amount and distribution of ⅡD were found among NREM Ⅰ-Ⅱ,NREM Ⅲ-Ⅳ,REM,and waking.However,no differences in the amount and distribution of ⅡD were noted between NREM Ⅰ-Ⅱ and NREM Ⅲ-Ⅳ as well as between REM and waking.Conclusion The amount of ⅡD is higher in NREM than in REM and waking;thus,NREM is more sensitive to diagnose epilepsy.The distribution of ⅡD in REM and waking is more restricted than that in NREM.