Comparison of the presurgical scale ambulatory electroencephalogram and the electrocorticography in epileptics with supratentorial tumor / 重庆医科大学学报

ABSTRACT

objective:To discuss the characteristics and localizing significance of presurgical scale ambulatory electroencephalo-gram(AEEG)in patients with supratentorial tumor by comparison their electrocorticography(ECOG).Methods:124 subjects were collected in our hospital.All patients were monitored by the scalp AEEG before surgeries and ECOG during oprating.The interictal epileptiform discharges of ECOG were divided into five catalogs.Ⅰno spikes.Ⅱisolated spikes.Ⅲrepetitive spike-wave pattern.Ⅳintermittent spikes,polyspikes waves burst.Ⅴcontinuous hyper-spikes and sharps.A,B,C,D and E were represented on the scalp AEEG which corresponded the above ECOG classification.Then AEEG and ECOG were analyzed.Re-sults(1)The scalp AEEG was abnormal in 83.87% of all subjects before surgery.Ⅱ type and Ⅲ type on ECOG did not appear easily on the scalp AEEG(P