Design of SSVEP Acquisition Circuit with Automatic Gain Adjustment
碩士 === 國立中央大學 === 電機工程研究所 === 97 === In this these novel methods for acquisition steady-state visual evoked potential (SSVEP) using automatic gain control (AGC), and automatic stop-band control (ASBC). That can enhance accuracy, stability and reduce power line interferences of brain-computer interfa...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/18728814747550195259 |
| Summary: | 碩士 === 國立中央大學 === 電機工程研究所 === 97 === In this these novel methods for acquisition steady-state visual evoked potential (SSVEP) using automatic gain control (AGC), and automatic stop-band control (ASBC). That can enhance accuracy, stability and reduce power line interferences of brain-computer interface (BCI) implemented in real time. In addition, a narrow bandpass with center frequency of 21Hz is presented. The center frequency is set by the same frequency which generates visual stimulation. This would amplify the SSVEP component and cancel the electrode-specific noise, and thereby increase the signal-to-noise ratio (SNR).
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