DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Je, Minkyu | - |
dc.contributor.advisor | 제민규 | - |
dc.contributor.author | Kim, Jinuk | - |
dc.date.accessioned | 2021-05-13T19:39:19Z | - |
dc.date.available | 2021-05-13T19:39:19Z | - |
dc.date.issued | 2020 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=925220&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/285056 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 전기및전자공학부, 2020.8,[vi, 52 p. :] | - |
dc.description.abstract | Microelectrode array is the pivotal platform in neural science and engineering because of its ability to read out the electrical activity of living neurons. The recent development of high-density and highly scalable electrode arrays enables sub-cellular recording and wider coverage, respectively. However, it is extremely challenging to achieve both metrics in a single array. The speed requirement in highly scalable arrays induces wideband-noise folding, and this property precludes meeting the strict noise requirements in high-density arrays. Previous studies contended that circuit thermal noises should be reduced to improve the signal-to-noise ratio of the recording system. By investigating the cell-electrode interface, however, we showed that the sealing resistance between a cell and an electrode turns out to contribute over 90% of total wideband noise power. In line with this finding, wideband-noise canceling strategy was presented to cope with the condition and support reliable recording. The recording system supported full-frame scanning of 100,000 electrodes with a $10- \mu m$ pitch. As a result, an 85% reduction of the noise contribution by the sealing resistance was achieved. Input-referred noise was reduced from $80 \mu V_{rms}$ to $18 \mu V_{rms}$. Spikes in weak-sealed cases that could not be detected without the cancellation were disclosed, and signal-to-noise ratio was significantly increased for all sealing conditions. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Microelectrode array▼aNeural recording system▼aActive pixel sensor▼aFull-frame readout▼aUltra-high-density microelectrode array (UHD-MEA)▼aScalable microelectrode array▼aWideband-noise cancellation | - |
dc.subject | 미세전극 어레이▼a신경 신호 측정 시스템▼a능동 픽셀 센서▼a풀 프레임 리드아웃▼a고밀도 미세전극 어레이▼a확장성▼a광대역 잡음 상쇄 | - |
dc.title | Scalable readout IC based on wideband noise cancelling for full-rate scanning of ultra-high-density microelectrode array (UHD-MEA) | - |
dc.title.alternative | 광대역 잡음 상쇄 기법을 이용한 확장 가능한 초고밀도 전극 어레이 풀 프레임 스캐닝 시스템 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :전기및전자공학부, | - |
dc.contributor.alternativeauthor | 김진욱 | - |
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