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Quantitative EEG Findings in Patients With Psychogenic Nonepileptic Seizures
Clinical EEG and Neuroscience ( IF 2 ) Pub Date : 2020-05-04 , DOI: 10.1177/1550059420918756
Kemal Arıkan 1, 2 , Özden Öksüz 3 , Barış Metin 1 , Güven Günver 4 , Hamide Laçin Çetin 2 , Taha Esmeray 2 , Nevzat Tarhan 1
Affiliation  

Objective. Psychogenic nonepileptic seizures (PNES), is one of the clinical manifestations of conversion disorder that epileptiform discharges do not accompany. Factors capable of increasing susceptibility to these seizures have not been adequately investigated yet. This study aims to investigate the quantitative electroencephalography (QEEG) findings for PNES by evaluating the resting EEG spectral power changes during the periods between seizures. Methods. Thirty-nine patients (29 females, 10 males) diagnosed with PNES (group 1) and 47 patients (23 females, 24 males) without any psychiatric diagnosis (group 2) were included in the study. The patients underwent a psychiatric examination at their first visit, were diagnosed and their EEGs were recorded. Using fast Fourier transformation (FFT), spectral power analysis was calculated for delta (0.5-4 Hz), theta (4-8 Hz), alpha (8-13 Hz), beta (15-30 Hz), high-beta (25-30 Hz), gamma-1 (31-40 Hz), gamma-2 (41-50 Hz), and gamma (30-80 Hz) frequency bands. Results. Six separate EEG band power, namely (C3-high beta, C3-gamma, C3-gamma-1, C3-gamma-2, P3-gamma, P3 gamma-1), were found to be higher in the patients diagnosed with PNES than in the control group. Conclusion. Our findings show that PNES correlate with high-frequency oscillations on central motor and somatosensory cortices.

中文翻译:

心因性非癫痫性癫痫发作患者的定量脑电图结果

客观的。心因性非癫痫发作 (PNES) 是癫痫样放电不伴随的转换障碍的临床表现之一。尚未对能够增加对这些癫痫发作的易感性的因素进行充分研究。本研究旨在通过评估癫痫发作之间的静息 EEG 频谱功率变化来研究 PNES 的定量脑电图 (QEEG) 结果。方法。39 名诊断为 PNES(第 1 组)的患者(29 名女性,10 名男性)和 47 名没有任何精神病学诊断的患者(23 名女性,24 名男性)(第 2 组)被纳入研究。患者在第一次就诊时接受了精神科检查,被诊断出来并记录了他们的脑电图。使用快速傅里叶变换 (FFT),计算 delta (0. 5-4 Hz), theta (4-8 Hz), alpha (8-13 Hz), beta (15-30 Hz), high-beta (25-30 Hz), gamma-1 (31-40 Hz), gamma-2 (41-50 Hz) 和 gamma (30-80 Hz) 频带。结果。在诊断为 PNES 的患者中发现六个独立的 EEG 波段功率,即(C3-high beta、C3-gamma、C3-gamma-1、C3-gamma-2、P3-gamma、P3 gamma-1)比对照组。结论。我们的研究结果表明,PNES 与中枢运动和躯体感觉皮层的高频振荡相关。
更新日期:2020-05-04
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