TY - GEN
T1 - Spectral subtraction and cepstral distance for enhancing EEG entropy
AU - Assaleh, Khaled
AU - Al-Nashash, Kasan
AU - Thakor, Nitish
PY - 2005/1/1
Y1 - 2005/1/1
N2 - Electroencephalographic (EEG) signals are normally acquired in the presence of background noise which causes inaccurate or false entropy measurement throughout the signal. In this paper, spectral subtraction is used to pre-process EEG signals to improve the accuracy of computing the subband wavelet entropy (SWE). The silent period in the EEG signal is identified via cepstral distance which allows its entropy to be set to zero. The EEG signal presented in this paper represents various stages of brain recovery obtained from a rodent following global cerebral ischemia. The various subband entropies are calculated using wavelet decomposition in EEG subbands, namely Delta, Theta, Alpha, Beta and Gamma. The utilization of spectral subtraction improved the accuracy of the SWE as compared to energy thresholding.
AB - Electroencephalographic (EEG) signals are normally acquired in the presence of background noise which causes inaccurate or false entropy measurement throughout the signal. In this paper, spectral subtraction is used to pre-process EEG signals to improve the accuracy of computing the subband wavelet entropy (SWE). The silent period in the EEG signal is identified via cepstral distance which allows its entropy to be set to zero. The EEG signal presented in this paper represents various stages of brain recovery obtained from a rodent following global cerebral ischemia. The various subband entropies are calculated using wavelet decomposition in EEG subbands, namely Delta, Theta, Alpha, Beta and Gamma. The utilization of spectral subtraction improved the accuracy of the SWE as compared to energy thresholding.
UR - http://www.scopus.com/inward/record.url?scp=33846935024&partnerID=8YFLogxK
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U2 - 10.1109/iembs.2005.1617041
DO - 10.1109/iembs.2005.1617041
M3 - Conference contribution
AN - SCOPUS:33846935024
SN - 0780387406
SN - 9780780387409
T3 - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
SP - 2751
EP - 2754
BT - Proceedings of the 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2005 27th Annual International Conference of the Engineering in Medicine and Biology Society, IEEE-EMBS 2005
Y2 - 1 September 2005 through 4 September 2005
ER -