Title :
Spatial subsampling and interpolation of interictal epileptic activity
Author :
Eriksen, K.J. ; Tucker, Don M.
Author_Institution :
EEG Dept., Legacy Good Samaritan Hosp., Portland, OR, USA
fDate :
30 Oct-2 Nov 1997
Abstract :
Spatial sampling must follow the same sampling constraints as temporal sampling. We attempted to oversample human epileptiform (spike) EEG activity and then downsampled to visually gauge the effect of undersampling. 128 channels were more than adequate for the small data set used thus far, but further studies are warranted
Keywords :
Nyquist criterion; electroencephalography; filtering theory; interpolation; medical signal processing; signal sampling; Nyquist theorem; human epileptiform EEG activity; interictal epileptic activity; interpolation; isopotential maps; oversampling; sampling constraints; spatial subsampling; spike EEG activity; undersampling; Brain modeling; Electrodes; Electroencephalography; Epilepsy; Filtering; Frequency; Humans; Interpolation; Power harmonic filters; Sampling methods;
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-4262-3
DOI :
10.1109/IEMBS.1997.756575
