This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a colleague Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (21) Citing Articles via Google Scholar Google Scholar Articles by Hagihira, S. Articles by Yoshiya, I. Search for Related Content PubMed PubMed Citation Articles by Hagihira, S. Articles by Yoshiya, I. Related Collections Monitoring (Non-cardiac) Technology

---

TECHNOLOGY, COMPUTING, AND SIMULATION

Practical Issues in Bispectral Analysis of Electroencephalographic Signals

Satoshi Hagihira, MD PhD^*, Masaki Takashina, MD, Takahiko Mori, MD, Takashi Mashimo, MD PhD^||, and Ikuto Yoshiya, MD PhD

*Surgical Center, Osaka Prefectural Habikino Hospital; Surgical Center and Department of General Medicine, Osaka University Hospital; Department of Anesthesiology, Osaka Prefectural General Hospital; and ||Department of Anesthesiology, Osaka University Graduate School of Medicine, Osaka, Japan

Address correspondence and reprint requests to Satoshi Hagihira, Department of Anesthesiology and Surgical Center, Osaka Prefectural Habikino Hospital, 3-7-1, Habikino, Habikino City, Osaka, Japan 583-8588. Address e-mail to hagihira{at}masui.med.osaka-u.ac.jp

IMPLICATIONS: The aim of this report was to confirm the methodology of bispectral analysis of electroencephalogram. In developing a software for real-time bispectral analysis, we encountered several practical problems in bispectrum calculation. We settled those and concluded that 3 min of monitoring are required to obtain reliable and reproducible bicoherence values.

This article has been cited by other articles:

				K. Hayashi, N. Tsuda, T. Sawa, and S. Hagihira Ketamine increases the frequency of electroencephalographic bicoherence peak on the {alpha} spindle area induced with propofol Br. J. Anaesth., September 1, 2007; 99(3): 389 - 395. [Abstract] [Full Text] [PDF]

				Y. Morimoto, S. Hagihira, S. Yamashita, Y. Iida, M. Matsumoto, S. Tsuruta, and T. Sakabe Changes in electroencephalographic bicoherence during sevoflurane anesthesia combined with intravenous fentanyl. Anesth. Analg., September 1, 2006; 103(3): 641 - 645. [Abstract] [Full Text] [PDF]

				S. Hagihira, M. Takashina, T. Mori, and T. Mashimo EEG during anesthesia is not a linear random process. Anesth. Analg., March 1, 2006; 102(3): 966 - 966. [Full Text] [PDF]

				C. Jeleazcov, J. Fechner, and H. Schwilden EEG During Anesthesia Is Not a Linear Random Process Anesth. Analg., March 1, 2006; 102(3): 966 - 967. [Full Text] [PDF]

				T. Gloveli, T. Dugladze, H. G. Rotstein, R. D. Traub, H. Monyer, U. Heinemann, M. A. Whittington, and N. J. Kopell Orthogonal arrangement of rhythm-generating microcircuits in the hippocampus PNAS, September 13, 2005; 102(37): 13295 - 13300. [Abstract] [Full Text] [PDF]

				C. Jeleazcov, J. Fechner, and H. Schwilden Electroencephalogram Monitoring During Anesthesia with Propofol and Alfentanil: The Impact of Second Order Spectral Analysis Anesth. Analg., May 1, 2005; 100(5): 1365 - 1369. [Abstract] [Full Text] [PDF]

				Y. Morimoto, A. Matsumoto, Y. Koizumi, T. Gohara, T. Sakabe, and S. Hagihira Changes in the Bispectral Index During Intraabdominal Irrigation in Patients Anesthetized with Nitrous Oxide and Sevoflurane Anesth. Analg., May 1, 2005; 100(5): 1370 - 1374. [Abstract] [Full Text] [PDF]

				Y. Morimoto, Y. Monden, K. Ohtake, T. Sakabe, and S. Hagihira The Detection of Cerebral Hypoperfusion with Bispectral Index Monitoring During General Anesthesia Anesth. Analg., January 1, 2005; 100(1): 158 - 161. [Abstract] [Full Text] [PDF]

				S. Hagihira, M. Takashina, T. Mori, T. Mashimo, J. W. Sleigh, J. Barnard, A. Miller, and D. A. Steyn-Ross Bispectral analysis gives us more information than power spectral-based analysis Br. J. Anaesth., May 1, 2004; 92(5): 772 - 773. [Full Text] [PDF]

				Y. Morimoto, S. Hagihira, Y. Koizumi, K. Ishida, M. Matsumoto, and T. Sakabe The Relationship Between Bispectral Index and Electroencephalographic Parameters During Isoflurane Anesthesia Anesth. Analg., May 1, 2004; 98(5): 1336 - 1340. [Abstract] [Full Text] [PDF]

				S. Hagihira, K. Okitsu, and M. Kawaguchi Unusually Low Bispectral Index Values During Emergence from Anesthesia Anesth. Analg., April 1, 2004; 98(4): 1036 - 1038. [Abstract] [Full Text] [PDF]

				A. Miller, J. W. Sleigh, J. Barnard, and D. A. Steyn-Ross Does bispectral analysis of the electroencephalogram add anything but complexity?{dagger} Br. J. Anaesth., January 1, 2004; 92(1): 8 - 13. [Abstract] [Full Text] [PDF]