Title :
Time-frequency distributions of subdural EEG at epileptic seizure onset
Author :
Sun, Mingui ; Scheuer, Mark L. ; Qian, Shie ; Pon, Lin-Sen ; Sclabassi, Robert J.
Author_Institution :
Dept. of Neurosurg., Pittsburgh Univ., PA, USA
Abstract :
A high-frequency signal occurring at epileptic seizure onset is investigated using time-frequency methods. This signal is extracted from the background activity by repeated forward and inverse Gabor transformations. The generation sites of this signal are determined by displaying the average signal power values with a 3-D anatomical image obtained from MRI scans
Keywords :
electroencephalography; inverse problems; medical signal processing; patient diagnosis; time-frequency analysis; transforms; 3-D anatomical image; MRI scans; background activity; epileptic seizure onset; forward Gabor transformation; generation sites; high-frequency signal; inverse Gabor transformation; subdural EEG; time-frequency distributions; Brain; Electrodes; Electroencephalography; Epilepsy; Instruments; Neurosurgery; Power generation; Sun; Surgery; Time frequency analysis;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1998. Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Pittsburgh, PA
Print_ISBN :
0-7803-5073-1
DOI :
10.1109/TFSA.1998.721364
