Artículo
A multichannel EEG acquisition scheme based on single ended amplifiers and digital DRL
Fecha de publicación:
02/2012
Editorial:
Institute of Electrical and Electronics Engineers
Revista:
IEEE Transactions On Biomedical Circuits And Systems
ISSN:
1932-4545
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Single ended (SE) amplifiers allow implementing biopotential front-ends with a reduced number of parts, being well suited for preamplified electrodes or compact EEG headboxes. On the other hand, given that each channel has independent gain; mismatching between these gains results in poor common-mode rejection ratios (CMRRs) (about 30 dB considering 1% tolerance components). This work proposes a scheme for multichannel EEG acquisition systems based on SE amplifiers and a novel digital driven right leg (DDRL) circuit, which overcome the poor CMRR of the front-end stage providing a high common mode reduction at power line frequency (up to 80 dB). A functional prototype was built and tested showing the feasibility of the proposed technique. It provided EEG records with negligible power line interference, even in very aggressive EMI environments.
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Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Citación
Haberman, Marcelo Alejandro; Spinelli, Enrique Mario; A multichannel EEG acquisition scheme based on single ended amplifiers and digital DRL; Institute of Electrical and Electronics Engineers; IEEE Transactions On Biomedical Circuits And Systems; 6; 6; 2-2012; 614-618
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