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非直視型視覚刺激によるtransient型VEPを用いた脳波入力インタフェースに関する研究
https://uec.repo.nii.ac.jp/records/1147
https://uec.repo.nii.ac.jp/records/11470d2df5e5-9130-40dc-b6db-cecdeddf4319
名前 / ファイル | ライセンス | アクション |
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9000000350.pdf (800.2 kB)
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Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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公開日 | 2009-03-24 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | 非直視型視覚刺激によるtransient型VEPを用いた脳波入力インタフェースに関する研究 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Study on transient VEP-based Brain-Computer Interface using non-direct gazed visual stimuli | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_46ec | |||||
資源タイプ | thesis | |||||
著者 |
吉村, 奈津江
× 吉村, 奈津江 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Visual evoked potentials are categorized as transient VEPs or steady-state VEPs (SSVEPs).Most VEP-based brain-computer interfaces (BCIs) utilize SSVEPs because SSVEPs can bedetected briefly by using frequency analysis. The SSVEP-based BCIs, however, may causediscomfort such as nausea because users have to gaze at high-speed blinking light as visualstimuli. Furthermore, these kinds of BCIs may not be used as universal devices becauseSSVEPs are not detectable by some users. Considering these facts, the author proposed aBCI using a non-direct gazing method based on transient VEPs. This interface is composedof 2 low-speed blinking lattice patterns as visual stimuli and 3 visual targets displayed inaddition to the stimuli. The gazing direction is determined by the waveform differences oftransient VEPs detected when users gaze at one of the targets. Compared with SSVEP-basedBCIs, the BCI is less annoying because it uses low-speed blinking visual stimuli and users donot have to gaze at the stimuli directly.The contents of this thesis are summarized as shown below:(1) The necessity of non-offensive BCIs which can be substituted for SSVEP-based BCIsis explained.(2) Differences between transient VEPs and SSVEPs are described, and advantages andchallenges of transient VEP-based BCIs are mentioned.(3) Availabilities of transient VEPs are shown by realizing a much shorter detection time.In addition, it is indicated that gazing direction could be determined by characteristicsof waveforms even when non-direct gazed visual stimuli are used.(4) A transient VEP-based BCI using non-direct gazed visual stimuli is proposed, andseveral experiments for developing more practical BCI are conducted. In the finalversion of the BCI, moving direction of the gaze can be determined in real time, andexperiments with 6 subjects showed an 84.2% accuracy rate in gazing directionjudgments.(5) Finally, achievements and challenges of this study are summarized. | |||||
学位名 | ||||||
学位名 | 博士(工学) | |||||
学位授与機関 | ||||||
学位授与機関名 | 電気通信大学 | |||||
学位授与年度 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 2008 | |||||
学位授与年月日 | ||||||
学位授与年月日 | 2009-03-24 |