Title :
Evaluation of a new Laplacian filter for steady-state EPs
Author :
Tang, Yu ; Norcia, Anthony M.
Author_Institution :
Smith-Kettlewell Eye Res. Inst., San Francisco, CA, USA
Abstract :
EEG and muscle spike interference were removed from steady-state evoked potential (SSEP) records by a new spatial filter based on a second-spatial-derivative electrode array (Laplacian filter). The SSEP was first removed from the surrounding electrodes using a notch pre-filter applied prior to calculation of the Laplacian filter. Both EEG simulations and human sweep VEP data show a significant increase in detectability
Keywords :
bioelectric potentials; biological techniques; electroencephalography; signal processing; EEG interference; Laplacian filter; detectability increase; muscle spike interference; notch prefilter; second-spatial-derivative electrode array; spatial filter; steady-state evoked potential records; Brain modeling; Electrodes; Electroencephalography; Filtering; Frequency; Humans; Interference; Laplace equations; Muscles; Scalp; Spatial filters; Steady-state; Testing;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.411822
