Scalp topography and source analysis of interictal spontaneous spikes and evoked spikes by digital stimulation in benign rolandic epilepsy

Electroencephalography and clinical neurophysiology Pub Date : 1998-07-01 DOI:10.1016/S0013-4694(98)00037-6

P Manganotti , C Miniussi , E Santorum , M Tinazzi , C Bonato , A Polo , C.A Marzi , A Fiaschi , B Dalla Bernardina , G Zanette

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引用次数: 25

Abstract

Objectives: We report the analysis of scalp topography and dipole modeling of the rolandic spikes in 6 patients suffering of benign rolandic epilepsy of childhood with extremely high amplitude SEP by tapping stimulation of the finger of the hand.

Methods: EEG and BESA analysis were performed for both rolandic spontaneous interictal spikes and high amplitude scalp activity evoked by tapping and electrical stimulation of the first finger of the right hand.

Results: The evoked responses showed a morphology characterized by a rapid phase (spike) followed by a slow phase (slow wave). The spike presented an early small positive component followed by a main negative component. Similar morphology, dipole configuration and source localization were observed for both rolandic spikes and evoked high amplitude scalp responses. Dipole localization showed an overlap of spatial coordinates between rolandic and evoked spikes.

Conclusions: These findings suggest that the extremely high amplitude SEPs could be evoked spikes which probably had the same cortical generators of the spontaneous rolandic spikes.

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良性罗兰癫痫自发性和诱发性峰间电位的头皮地形图及来源分析

目的:报道6例小儿良性罗兰dic癫痫患者的头皮地形图分析和极振幅SEP的偶极子模型。方法:对右手第一指轻敲和电刺激诱发的roland自发性间歇峰和高振幅头皮活动进行EEG和BESA分析。结果:诱发反应呈快速相(峰)后慢相(慢波)的形态特征。峰值表现为早期小的正分量，随后是主要的负分量。相似的形态，偶极子配置和源定位观察到两个罗兰狄峰和诱发高振幅头皮反应。偶极子定位显示罗兰峰和诱发峰的空间坐标重叠。结论:这些发现表明，极高振幅的sep可能被诱发峰，可能具有与自发罗兰峰相同的皮层发生器。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Electroencephalography and clinical neurophysiology

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