Title :
Localizing the sources of early gamma components in auditory oddball response
Author :
Ademoglu, Ahmet ; Devrim, Muge ; Demiralp, Tamer ; Istefanopulos, Yorgo
Author_Institution :
Inst. of Biomed. Eng., Bogazici Univ., Istanbul, Turkey
Abstract :
Early gamma components of the auditory oddball responses were investigated using the wavelet transform (WT) and minimum variance spatial filtering (MVSF). WT was applied to single sweep oddball responses and the coefficients covering the range of the early gamma response (0-120 ms) were used to calculate the covariance matrix used in the MVSF. Different generators were found to correspond to different time-frequency components from the early gamma response
Keywords :
auditory evoked potentials; electroencephalography; medical signal processing; spatial filters; wavelet transforms; auditory oddball response; coefficients; covariance matrix; early gamma components; minimum variance spatial filtering; single sweep oddball responses; sources; time-frequency components; wavelet transform; Biomedical engineering; Covariance matrix; Electroencephalography; Filtering; Physiology; Spline; Time frequency analysis; Wavelet analysis; Wavelet coefficients; Wavelet transforms;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802541
