Title :
Nonextensive entropy analysis of non-stationary ERP signals
Author :
Shen, Minfen ; Zhang, Qianhua ; Beadle, P.J.
Author_Institution :
Sci. Research Center, Shantou Univ., China
Abstract :
The application of a measurement of entropy defined from the nonextensive entropy, the Tsallis-like time-dependent entropy (TDE), is proposed to investigate the event-related potential (ERPs). The TDE carries information about the degree of order or disorder associated with a multi-frequency signal response. The statistical characteristics of the TDE for different signal distributions are studied. TDE was estimated for the ERP signals recorded from several healthy subjects with a specified cognitive task. A significant decrease of entropy was correlated with the responses to target stimulus (P300). The experimental results indicate that the TDE can be employed as a quantitative measurement for monitoring the ERPs activities and other signal processing.
Keywords :
bioelectric potentials; electroencephalography; entropy; medical signal processing; signal processing; statistical analysis; Tsallis-like time-dependent entropy; multi-frequency signal response; nonextensive entropy analysis; nonstationary event related potential signals; signal distributions; signal processing; Electroencephalography; Enterprise resource planning; Entropy; Microscopy; Monitoring; Signal analysis; Signal processing; Statistics; Thermodynamics; Time measurement;
Conference_Titel :
Neural Networks and Signal Processing, 2003. Proceedings of the 2003 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
0-7803-7702-8
DOI :
10.1109/ICNNSP.2003.1279398
