Development of an electroencephalogram (EEG) amplifier for a brain-computer interface (BCI) / Phang Yoke Mun
A bipolar EEG amplifier developed specifically for use in a brain-computer interface (BCI) is described. An input stage provides very high input impedance to EEG signals. AC coupling is performed in the differential stage to prevent electrode offset voltages from saturating the amplifier when hig...
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| Format: | Thesis |
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2006
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| _version_ | 1849734545836867584 |
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| author | Phang, Yoke Mun |
| author_facet | Phang, Yoke Mun |
| author_sort | Phang, Yoke Mun |
| description | A bipolar EEG amplifier developed specifically for use in a brain-computer
interface (BCI) is described. An input stage provides very high input impedance to EEG
signals. AC coupling is performed in the differential stage to prevent electrode offset
voltages from saturating the amplifier when high gain is used. High CMRR is achieved
without trimming or component matching. The amplifier is easily modified to amplify
other biopotentials. The low power requirement of the amplifier allows it to be powered
through the USB connection and is suitable for portable applications.
Four amplifier channels and a DRL circuit were constructed on a board. Two
channels were used for amplifying EEG and another two for amplifying EOG and EMG
around the throat area for artifact rejection purposes. This amplifier board was used as
part of a BCI system that enables the user to select between four prosthetic hand
movements and four LEDs representing other devices. |
| format | Thesis |
| id | oai:studentsrepo.um.edu.my:7492 |
| institution | Universiti Malaya |
| publishDate | 2006 |
| record_format | eprints |
| spelling | oai:studentsrepo.um.edu.my:74922017-08-04T04:48:05Z Development of an electroencephalogram (EEG) amplifier for a brain-computer interface (BCI) / Phang Yoke Mun Phang, Yoke Mun T Technology (General) A bipolar EEG amplifier developed specifically for use in a brain-computer interface (BCI) is described. An input stage provides very high input impedance to EEG signals. AC coupling is performed in the differential stage to prevent electrode offset voltages from saturating the amplifier when high gain is used. High CMRR is achieved without trimming or component matching. The amplifier is easily modified to amplify other biopotentials. The low power requirement of the amplifier allows it to be powered through the USB connection and is suitable for portable applications. Four amplifier channels and a DRL circuit were constructed on a board. Two channels were used for amplifying EEG and another two for amplifying EOG and EMG around the throat area for artifact rejection purposes. This amplifier board was used as part of a BCI system that enables the user to select between four prosthetic hand movements and four LEDs representing other devices. 2006-02-17 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/7492/1/Development_of_an_electroencephalogram.pdf Phang, Yoke Mun (2006) Development of an electroencephalogram (EEG) amplifier for a brain-computer interface (BCI) / Phang Yoke Mun. Masters thesis, University of Malaya. http://studentsrepo.um.edu.my/7492/ |
| spellingShingle | T Technology (General) Phang, Yoke Mun Development of an electroencephalogram (EEG) amplifier for a brain-computer interface (BCI) / Phang Yoke Mun |
| title | Development of an electroencephalogram (EEG) amplifier for a brain-computer interface (BCI) / Phang Yoke Mun |
| title_full | Development of an electroencephalogram (EEG) amplifier for a brain-computer interface (BCI) / Phang Yoke Mun |
| title_fullStr | Development of an electroencephalogram (EEG) amplifier for a brain-computer interface (BCI) / Phang Yoke Mun |
| title_full_unstemmed | Development of an electroencephalogram (EEG) amplifier for a brain-computer interface (BCI) / Phang Yoke Mun |
| title_short | Development of an electroencephalogram (EEG) amplifier for a brain-computer interface (BCI) / Phang Yoke Mun |
| title_sort | development of an electroencephalogram eeg amplifier for a brain computer interface bci phang yoke mun |
| topic | T Technology (General) |
| url-record | http://studentsrepo.um.edu.my/7492/ |
| work_keys_str_mv | AT phangyokemun developmentofanelectroencephalogrameegamplifierforabraincomputerinterfacebciphangyokemun |