Automatic Interpretation of Dominant Rhythm in Awake Electroencephalogram Based on Coherence and Phase Analysis for Bipolar Derivation

Author

Zhang, Xiu ; Wang, Xingyu ; Nagamine, Takashi ; Sugi, Takenao ; Shibasaki, Hiroshi ; Ikeda, Akio ; Nakamura, Masatoshi

Author_Institution

Dept. of Autom., East China Univ. of Sci. & Technol., Shanghai, China

fYear

2009

fDate

17-19 Oct. 2009

Firstpage

1

Lastpage

5

Abstract

Automatic electroencephalogram (EEG) interpretation based on referential derivation is easily interfered by ear lobe activation. In order to improve the quantitative EEG interpretation of dominant rhythm, bipolar derivation was proposed in this study. Coherence and phase obtained from cross spectrum analysis were used to determine the focus of dominant rhythm. Existence, peak frequency, amplitude and asymmetry of dominant rhythm were interpreted within the frequency band from 4 to 13Hz. The automatic interpretation of dominant rhythm based on bipolar derivation was compared with the visual inspection of electroencephalographer (EEGer) and showed good consistence.

Keywords

electroencephalography; medical signal processing; neurophysiology; pattern recognition; automatic dominant EEG rhythm interpretation; awake EEG; bipolar derivation; coherence analysis; cross spectrum analysis; dominant rhythm amplitude; dominant rhythm asymmetry; dominant rhythm existence; dominant rhythm peak frequency; electroencephalogram; frequency 4 Hz to 13 Hz; phase analysis; referential derivation; Aging; Auditory system; Biomedical engineering; Deafness; Instruments; Rhythm; Signal analysis; Signal synthesis; Speech processing; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Informatics, 2009. BMEI '09. 2nd International Conference on

Conference_Location

Tianjin

Print_ISBN

978-1-4244-4132-7

Electronic_ISBN

978-1-4244-4134-1

Type

conf

DOI

10.1109/BMEI.2009.5305275

Filename

5305275