Quantitative EEG Findings in Patients With Psychogenic Nonepileptic Seizures

Arikan K., Oksuz O., Metin B., Gunver G., Cetin H. L., Esmeray T., ...Daha Fazla

CLINICAL EEG AND NEUROSCIENCE, cilt.52, sa.3, ss.175-180, 2021 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 52 Sayı: 3
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1177/1550059420918756
  • Dergi Adı: CLINICAL EEG AND NEUROSCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Agricultural & Environmental Science Database, Biotechnology Research Abstracts, EMBASE, MEDLINE
  • Sayfa Sayıları: ss.175-180
  • Anahtar Kelimeler: electroencephalogram (EEG), seizures, epilepsy, EEG, electroencephalography, FUNCTIONAL CONNECTIVITY, BRAIN, POWER, ADOLESCENTS, COHERENCE, DIAGNOSIS, DELAY
  • İstanbul Üniversitesi Adresli: Evet

Özet

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.