Amplitude-integrated EEG colored according to spectral edge frequency.

Abstract:

OBJECTIVE:To improve the interpretability of figures containing an amplitude-integrated electroencephalogram (aEEG), we devised a color scale that allows us to incorporate spectral edge frequency (SEF) information into aEEG figures. Preliminary clinical assessment of this novel technique, which we call aEEG/SEF, was performed using neonatal and early infantile seizure data. METHODS:We created aEEG, color density spectral array (DSA), and aEEG/SEF figures for focal seizures recorded in seven infants. Each seizure was paired with an interictal period from the same patient. After receiving instructions on how to interpret the figures, eight test reviewers examined each of the 72 figures displaying compressed data in aEEG, DSA, or aEEG/SEF form (12 seizures and 12 corresponding interictal periods) and attempted to identify each as a seizure or otherwise. They were not provided with any information regarding the original record. RESULTS:The median number of correctly identified seizures, out of a total of 12, was 7 (58.3%) for aEEG figures, 8 (66.7%) for DSA figures and 10 (83.3%) for aEEG/SEF figures; the differences among these are statistically significant (p=0.011). All reviewers concluded that aEEG/SEF figures were the easiest to interpret. CONCLUSION:The aEEG/SEF data presentation technique is a valid option in aEEG recordings of seizures.

journal_name

Epilepsy Res

journal_title

Epilepsy research

authors

Kobayashi K,Mimaki N,Endoh F,Inoue T,Yoshinaga H,Ohtsuka Y

doi

10.1016/j.eplepsyres.2011.06.012

subject

Has Abstract

pub_date

2011-10-01 00:00:00

pages

276-82

issue

3

eissn

0920-1211

issn

1872-6844

pii

S0920-1211(11)00174-4

journal_volume

96

pub_type

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