| Presentation | 2019-03-14 Beamforming for Brain-Activity Reconstruction under Time-Correlated Interference Takehiro Kono, Masahiro Yukawa, Tomasz Piotrowski, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We consider the problem of reconstruction of brain activity from non-invasive electroencephalography (EEG) signals using beamforming (spatial filtering). An intrinsic gap between the output variance and the mean squared errorsis highlighted that occurs due to the presence of interfering activities correlated withthe desired activity. We propose a beamformer imposing a quadratic constraint that bounds the total power of interference leakage together with the distortionless constraint for reducing this gap without amplifying the noise. The proposed beamformer can be implemented efficiently by the adaptive filtering algorithm. Numerical examples show the clear advantages of the proposed beamformer over the minimum-variance distortionless response (MVDR) and nulling beamformers. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Electroencephalographyinverse ploblemsrelaxed zero forcingMVDR beamformernulling beamformer |
| Paper # | EA2018-116,SIP2018-122,SP2018-78 |
| Date of Issue | 2019-03-07 (EA, SIP, SP) |
| Conference Information | |
| Committee | EA / SIP / SP |
|---|---|
| Conference Date | 2019/3/14(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | i+Land nagasaki (Nagasaki-shi) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Engineering/Electro Acoustics, Signal Processing, Speech, and Related Topics |
| Chair | Suehiro Shimauchi(Kanazawa Inst. of Tech.) / Shogo Muramatsu(Niigata Univ.) / Yoichi Yamashita(Ritsumeikan Univ.) |
| Vice Chair | Kenichi Furuya(Oita Univ.) / Kanji Watanabe(Akita Pref. Univ.) / Naoyuki Aikawa(TUS) / Kazunori Hayashi(Osaka City Univ) / Akinobu Ri(Nagoya Inst. of Tech.) |
| Secretary | Kenichi Furuya(Shizuoka Inst. of Science and Tech.) / Kanji Watanabe(NHK) / Naoyuki Aikawa(Takushoku Univ.) / Kazunori Hayashi(Hiroshima Univ.) / Akinobu Ri(Kyoto Univ.) |
| Assistant | Keisuke Imoto(Ritsumeikan Univ.) / Daisuke Morikawa(Toyama Pref Univ.) / Katsumi Konishi(Hosei Univ.) / hyihsin(Takushoku Univ.) / Tomoki Koriyama(Tokyo Inst. of Tech.) / Satoshi Kobashikawa(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Technical Committee on Signal Processing / Technical Committee on Speech |
|---|---|
| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Beamforming for Brain-Activity Reconstruction under Time-Correlated Interference |
| Sub Title (in English) | |
| Keyword(1) | Electroencephalographyinverse ploblemsrelaxed zero forcingMVDR beamformernulling beamformer |
| 1st Author's Name | Takehiro Kono |
| 1st Author's Affiliation | Keio University(Keio Univ.) |
| 2nd Author's Name | Masahiro Yukawa |
| 2nd Author's Affiliation | Keio University/Riken(Keio Univ./Riken) |
| 3rd Author's Name | Tomasz Piotrowski |
| 3rd Author's Affiliation | Nicolaus Copernicus University/Interdisciplinary Center for Modern Technologies(Nicolaus Copernicus Univ./Interdisciplinary Center for Modern Te) |
| Date | 2019-03-14 |
| Paper # | EA2018-116,SIP2018-122,SP2018-78 |
| Volume (vol) | vol.118 |
| Number (no) | EA-495,SIP-496,SP-497 |
| Page | pp.pp.99-104(EA), pp.99-104(SIP), pp.99-104(SP), |
| #Pages | 6 |
| Date of Issue | 2019-03-07 (EA, SIP, SP) |