Spectral EEG parameters in patients with tick-borne encephalitis: A follow-up study

C. Juhasz, I. Szirmai

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Follow-up of spectral EEG parameters were reported for five patients with serologically verified tick-borne encephalitis. Comparisons were made for clinical data and findings of EEG analysis (power probability mapping, peak- power frequencies, and alpha/theta power ratios) were compared. A prominent feature of the EEG abnormality was the marked attenuation of background alpha activity. The peak-power frequency and absolute power analysis of three patients showed significant hemispheric asymmetry in the alpha and theta bands respectively. EEG topograms demonstrated persistent theta power fields in one patient. Alpha/theta power ratio was a reliable indicator for the recovery of rhythmic EEG activity during the convalescence. Reorganization of alpha activity appeared to lag behind the clinical improvement, its course was different from patient to patient. Because of the discrepancy of bioelectric and clinical findings the authors recommend long-term EEG monitoring in patients with tick-borne encephalitis.

Original languageEnglish
Pages (from-to)53-58
Number of pages6
JournalClinical EEG Electroencephalography
Volume24
Issue number2
Publication statusPublished - 1993

Fingerprint

Tick-Borne Encephalitis
Electroencephalography
Physiologic Monitoring

Keywords

  • Brain Mapping
  • Electroencephalography
  • Spectral Analysis
  • Tick-Borne Encephalitis

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Spectral EEG parameters in patients with tick-borne encephalitis : A follow-up study. / Juhasz, C.; Szirmai, I.

In: Clinical EEG Electroencephalography, Vol. 24, No. 2, 1993, p. 53-58.

Research output: Contribution to journalArticle

@article{3deadce6ca45424598584b37dd0e6264,
title = "Spectral EEG parameters in patients with tick-borne encephalitis: A follow-up study",
abstract = "Follow-up of spectral EEG parameters were reported for five patients with serologically verified tick-borne encephalitis. Comparisons were made for clinical data and findings of EEG analysis (power probability mapping, peak- power frequencies, and alpha/theta power ratios) were compared. A prominent feature of the EEG abnormality was the marked attenuation of background alpha activity. The peak-power frequency and absolute power analysis of three patients showed significant hemispheric asymmetry in the alpha and theta bands respectively. EEG topograms demonstrated persistent theta power fields in one patient. Alpha/theta power ratio was a reliable indicator for the recovery of rhythmic EEG activity during the convalescence. Reorganization of alpha activity appeared to lag behind the clinical improvement, its course was different from patient to patient. Because of the discrepancy of bioelectric and clinical findings the authors recommend long-term EEG monitoring in patients with tick-borne encephalitis.",
keywords = "Brain Mapping, Electroencephalography, Spectral Analysis, Tick-Borne Encephalitis",
author = "C. Juhasz and I. Szirmai",
year = "1993",
language = "English",
volume = "24",
pages = "53--58",
journal = "Clinical EEG and Neuroscience",
issn = "1550-0594",
publisher = "EEG and Clinical Neuroscience Society (ECNS)",
number = "2",

}

TY - JOUR

T1 - Spectral EEG parameters in patients with tick-borne encephalitis

T2 - A follow-up study

AU - Juhasz, C.

AU - Szirmai, I.

PY - 1993

Y1 - 1993

N2 - Follow-up of spectral EEG parameters were reported for five patients with serologically verified tick-borne encephalitis. Comparisons were made for clinical data and findings of EEG analysis (power probability mapping, peak- power frequencies, and alpha/theta power ratios) were compared. A prominent feature of the EEG abnormality was the marked attenuation of background alpha activity. The peak-power frequency and absolute power analysis of three patients showed significant hemispheric asymmetry in the alpha and theta bands respectively. EEG topograms demonstrated persistent theta power fields in one patient. Alpha/theta power ratio was a reliable indicator for the recovery of rhythmic EEG activity during the convalescence. Reorganization of alpha activity appeared to lag behind the clinical improvement, its course was different from patient to patient. Because of the discrepancy of bioelectric and clinical findings the authors recommend long-term EEG monitoring in patients with tick-borne encephalitis.

AB - Follow-up of spectral EEG parameters were reported for five patients with serologically verified tick-borne encephalitis. Comparisons were made for clinical data and findings of EEG analysis (power probability mapping, peak- power frequencies, and alpha/theta power ratios) were compared. A prominent feature of the EEG abnormality was the marked attenuation of background alpha activity. The peak-power frequency and absolute power analysis of three patients showed significant hemispheric asymmetry in the alpha and theta bands respectively. EEG topograms demonstrated persistent theta power fields in one patient. Alpha/theta power ratio was a reliable indicator for the recovery of rhythmic EEG activity during the convalescence. Reorganization of alpha activity appeared to lag behind the clinical improvement, its course was different from patient to patient. Because of the discrepancy of bioelectric and clinical findings the authors recommend long-term EEG monitoring in patients with tick-borne encephalitis.

KW - Brain Mapping

KW - Electroencephalography

KW - Spectral Analysis

KW - Tick-Borne Encephalitis

UR - http://www.scopus.com/inward/record.url?scp=0027534573&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027534573&partnerID=8YFLogxK

M3 - Article

C2 - 8500247

AN - SCOPUS:0027534573

VL - 24

SP - 53

EP - 58

JO - Clinical EEG and Neuroscience

JF - Clinical EEG and Neuroscience

SN - 1550-0594

IS - 2

ER -