Electroencephalographic background desynchronization during cerebral blood flow reduction

M. Cursi, M. V. Meraviglia, G. F. Fanelli, R. Chiesa, A. Tirelli, G. Comi, F. Minicucci

Research output: Contribution to journalArticlepeer-review


Objective: The aim of this study is to evaluate the usefulness of a spectral function detecting cerebral hypoperfusion. Methods: Continuous electroencephalographic monitoring was employed during 47 consecutive carotid endarterectomies. Patients were assigned to 3 different groups according to the entity of electroencephalographic changes during carotid clamping (major changes: group A; moderate changes: group B; no change: group C). The desynchronization function, indicating the reduction of the 8-15 Hz band power, and the desynchronization index were calculated. Results: Group A function decreased within 20 s from clamping, with a constant slope (7.14). Desynchronization indexes were: 76.85% (group A), 40.23% (group B) and 15.29% (group C). Difference among groups was statistically significant (P

Original languageEnglish
Pages (from-to)2577-2585
Number of pages9
JournalClinical Neurophysiology
Issue number11
Publication statusPublished - Nov 2005


  • Carotid endarterectomy
  • EEG computer analysis
  • Hypoperfusion
  • Intraoperative monitoring

ASJC Scopus subject areas

  • Clinical Neurology
  • Radiology Nuclear Medicine and imaging
  • Neurology
  • Sensory Systems
  • Physiology (medical)


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