Continuous time wavelet entropy of auditory evoked potentials

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ÇEK M. E., Ozgoren M., Savaci F. A.

COMPUTERS IN BIOLOGY AND MEDICINE, vol.40, no.1, pp.90-96, 2010 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 1
  • Publication Date: 2010
  • Doi Number: 10.1016/j.compbiomed.2009.11.005
  • Journal Name: COMPUTERS IN BIOLOGY AND MEDICINE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.90-96
  • Keywords: Wavelet transform, Continuous wavelet entropy, Shannon entropy, Tsallis entropy, Relative wavelet energy, EVENT-RELATED POTENTIALS
  • Dokuz Eylül University Affiliated: Yes

Abstract

In this paper, the continuous time wavelet entropy (CTWE) of auditory evoked potentials (AEP) has been characterized by evaluating the relative wavelet energies (RWE) in specified EEG frequency bands. Thus, the rapid variations of OWE due to the auditory stimulation could be detected in post-stimulus time interval. This approach removes the probability of missing the information hidden in short time intervals. The discrete time and continuous time wavelet based wavelet entropy variations were compared on non-target and target AEP data. It was observed that CTWE can also be an alternative method to analyze entropy as a function of time. (C) 2009 Elsevier Ltd. All rights reserved.