數據集 | BCI Challenge @ NER 2015

This BCI Challenge is being proposed as part of the IEEE Neural Engineering Conference (NER2015).

問題描述

在這次的競賽中,我們提供人在只注意視覺刺激情況下拼寫單詞的腦電數據。比賽的目標是檢測被試在拼寫任務中的錯誤。

設置
使用P300拼寫器,36個字符(字母或數字)呈現在屏幕上,目標是根據被試收到反饋後的腦電信號確定所選字符是否正確。

實驗設計
使用兩種拼寫方案:

  1. 快速模式,更容易出錯(每個字符閃爍4次)
  2. 慢速模式,不容易出錯(每個字符閃爍8次)

在最後一次閃爍之後,被試繼續觀察屏幕等待反饋,反饋內容爲所選字符的放大。即使獲得的反饋是錯誤的,要求被試繼續下一個字符的拼寫。
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一共26個被試(13名男性,13名女性,年齡範圍20~37,平均年齡28.8±5.4)。所有被試的視力正常或者矯後正常,無P300或其他腦機接口經驗。56通道Ag/AgCl腦電傳感器記錄腦電信號,位置爲國際10-20系統,採樣率600Hz,以鼻子爲參考,接地端在肩膀,阻抗保持在10KΩ以下。

被試需要經歷5次拼寫,前4次每次拼寫由12個5個字母的單詞組成,第5次由20個5個字母的單詞組成。

數據集

200Hz頻率下采樣、EOG檢測眼動信號

數據文件
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從上到下依次爲:

  • 通道位置
  • 數據提交格式
  • 訓練標籤 (訓練集的標籤)
  • 測試集 (10個其他被試的數據,5次訓練,50個數據文件)
  • 訓練集(16個被試,5次訓練,80個數據文件,前4次訓練每次訓練60個反饋,第5次100個)

數據字段

‘通道位置’文件包含3個字段:

  1. 標籤:通道名稱
  2. 半徑:電極位置極座標半徑
  3. Phi:電極位置極座標角度

‘訓練集’和‘數據集’文件包含以下字段:

  • Time: Timestamp of each sample(採樣時間戳)
  • Fp1: EEG samples recorded from Fp1(Fp1電極記錄的信號)
  • Fp2: EEG samples recorded from Fp2
  • AF7: EEG samples recorded from AF7
  • AF3: EEG samples recorded from AF3
  • AF4: EEG samples recorded from AF4
  • AF8: EEG samples recorded from AF8
  • F7: EEG samples recorded from F7
  • F5: EEG samples recorded from F5
  • F3: EEG samples recorded from F3
  • F1: EEG samples recorded from F1
  • Fz: EEG samples recorded from Fz
  • F2: EEG samples recorded from F2
  • F4: EEG samples recorded from F4
  • F6: EEG samples recorded from F6
  • F8: EEG samples recorded from F8
  • FT7: EEG samples recorded from FT7
  • FC5: EEG samples recorded from FC5
  • FC3: EEG samples recorded from FC3
  • FC1: EEG samples recorded from FC1
  • FCz: EEG samples recorded from FCz
  • FC2: EEG samples recorded from FC2
  • FC4: EEG samples recorded from FC4
  • FC6: EEG samples recorded from FC6
  • FT8: EEG samples recorded from FT8
  • T7: EEG samples recorded from T7
  • C5: EEG samples recorded from C5
  • C3: EEG samples recorded from C3
  • C1: EEG samples recorded from C1
  • Cz: EEG samples recorded from Cz
  • C2: EEG samples recorded from C2
  • C4: EEG samples recorded from C4
  • C6: EEG samples recorded from C6
  • T8: EEG samples recorded from T8
  • TP7: EEG samples recorded from TP7
  • CP5: EEG samples recorded from CP5
  • CP3: EEG samples recorded from CP3
  • CP1: EEG samples recorded from CP1
  • CPz: EEG samples recorded from CPz
  • CP2: EEG samples recorded from CP2
  • CP4: EEG samples recorded from CP4
  • CP6: EEG samples recorded from CP6
  • TP8: EEG samples recorded from TP8
  • P7: EEG samples recorded from P7
  • P5: EEG samples recorded from P5
  • P3: EEG samples recorded from P3
  • P1: EEG samples recorded from P1
  • Pz: EEG samples recorded from Pz
  • P2: EEG samples recorded from P2
  • P4: EEG samples recorded from P4
  • P6: EEG samples recorded from P6
  • P8: EEG samples recorded from P8
  • PO7: EEG samples recorded from PO7
  • POz: EEG samples recorded from POz
  • P08: EEG samples recorded from P08
  • O1: EEG samples recorded from O1
  • O2: EEG samples recorded from O2
  • EOG: samples recorded from EOG derivation(EOG記錄的眼動信號)
  • FeedBackEvent: a zero vector except for each occurring feedback timestamp for which value is equal to one

‘標籤’文件包含2個字段:

  1. IdFeedBack:反饋標識(S01 Sess01 FB001對應於被試1的第1次試驗中的第1個反饋)
  2. 預測信息:錯誤與正確分別爲0和1

數據集地址

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