Raw Data from - Speech-ABRs in Cochlear Implant Recipients: Feasibility Study

Speech-ABRs in Cochlear Implant Recipients: Feasibility Study Ghada BinKhamis, Emanuele Perugia, Martin O’Driscoll, Karolina Kluk Please site the paper when using this dataset (DOI: 10.1080/14992027.2019.1619100) Participant Recordings (BinKhamis et al Speech_ABR in CI raw data.zip) Description of raw EEG (speech-ABR) data main folder, subfolders, and raw EEG files Folder Information Main folder: Contains 12 subfolders with the raw data from 12 participants Subfolders: Each subfolder contains raw EEG recordings from one participant, subfolders names are: CI1, CI2, CI3, CI4, CI5, CI6, CI7, CI8, CI9, CI10, CI11, CI12 Each participant subfolder contains four ‘.mat’ files: Each ‘.mat’ file starts with the participant ID CI1, CI2, CI3, CI4, CI5, CI6, CI7, CI8, CI9, CI10, CI11, CI12 Followed by the stimulus: 40 da Followed by the stimulus polarity Pos for positive/standard Neg for negative (reversed polarity stimulus) Followed by the ipsilateral/implanted ear R for right ear L for left ear Finally the recording number for that polarity 1 is the first recording 2 is the second recording Example ‘.mat’ file name: CI1 40 da Neg R1.mat: Participant number 1, reversed polarity stimulus, implanted ear – right ear, recording number one CI9 40 da Pos L2.mat: Participant number 9, standard/positive polarity stimulus, implanted ear – left ear, recording number two Description of ‘.mat’ files that can be accessed and processed using MATLAB (MathWorks): Each ‘.mat’ file is a structure that contains the following fields: The first nine fields are informational, for example: xunits: ‘s’ indicates that the recording time window is in seconds, conversion to milliseconds would be required to plot the data in milliseconds start: ‘0’ indicates that both stimulus and recording start at 0 seconds points: 13750 is the number of sample points chans: 2 is the number of channels (channel 2 is the ipsilateral channel for participants with a Right CI, and channel 1 is the ipsilateral channel for participants with a Left CI) frames: 2500 is the number of epochs (repetitions) The last filed ‘values’ is what contains the raw EEG data (13750x2x2500) 13750 is the number of samples 2 is the number of channels (channel one is recorded from the left ear lobe (A1) and channel two is from the right ear lobe (A2)) 2500 is the number of epochs Date of data collection: September 2017 Artificial-head artefact Recordings (BinKhamis et al Speech_ABR in CI artefact data.zip) This folder contains six artificial-head artefact recordings CI07_Artefact_40da_neg.mat Artefact based on closest approximation to CI07's MAP Recorded in response to a reversed polarity (neg) 40 ms [da] CI07_Artefact_40da_pos.mat Artefact based on closest approximation to CI07's MAP Recorded in response to a standard polarity (pos) 40 ms [da] CI08_Artefact_40da_neg.mat Artefact based on closest approximation to CI08's MAP Recorded in response to a reversed polarity (neg) 40 ms [da] CI08_Artefact_40da_pos.mat Artefact based on closest approximation to CI08's MAP Recorded in response to a standard polarity (pos) 40 ms [da] CI09_Artefact_40da_neg.mat Artefact based on closest approximation to CI09's MAP Recorded in response to a reversed polarity (neg) 40 ms [da] CI09_Artefact_40da_pos.mat Artefact based on closest approximation to CI09's MAP Recorded in response to a standard polarity (pos) 40 ms [da] Artefact recordings are in '.mat' format (MATLAB, MathWorks) Each '.mat' file is a 10988x2500 matrix 10988 is the number of sample points 2500 is the number of epochs (repetitions) Artefacts recorded in: June 2018

# 人工耳蜗（Cochlear Implant，CI）植入者的语音听觉脑干反应（Speech-ABR）：可行性研究
作者：Ghada BinKhamis、Emanuele Perugia、Martin O’Driscoll、Karolina Kluk
使用本数据集时请引用该论文（DOI: 10.1080/14992027.2019.1619100）

## 参与者录制数据（BinKhamis 等人的《CI 语音ABR 原始数据.zip》）
### 原始脑电（语音听觉脑干反应）数据的文件夹与文件说明
#### 文件夹信息
主文件夹：包含12个子文件夹，存储12名参与者的原始脑电数据。
子文件夹：每个子文件夹对应1名参与者的原始脑电录制结果，命名依次为CI1、CI2、CI3、CI4、CI5、CI6、CI7、CI8、CI9、CI10、CI11、CI12。
每个参与者子文件夹内包含4个`.mat`文件，文件名组成规则如下：
1. 前缀为参与者ID（CI1至CI12）
2. 随后为刺激标识：`40 da`
3. 紧接着为刺激极性：`Pos`代表正极/标准刺激，`Neg`代表负极（反转极性）刺激
4. 再随后为同侧/植入耳标识：`R`代表右耳，`L`代表左耳
5. 最后为该极性下的录制编号：`1`为首次录制，`2`为第二次录制

示例文件名：
- CI1 40 da Neg R1.mat：对应参与者1，反转极性刺激，植入耳为右耳，首次录制
- CI9 40 da Pos L2.mat：对应参与者9，标准/正极性刺激，植入耳为左耳，第二次录制

#### `.mat`文件说明
可通过MATLAB（MathWorks）访问并处理该类文件，每个`.mat`文件为结构体，包含以下字段：
前9个字段为信息类字段，示例如下：
- `xunits`：取值为`s`，表示录制时间窗口单位为秒，若需以毫秒为单位绘图需进行单位转换
- `start`：取值为`0`，表示刺激与录制均于0秒时刻启动
- `points`：取值为13750，表示总采样点数
- `chans`：取值为2，表示通道数量：对于右侧人工耳蜗植入者，通道2为同侧通道；对于左侧人工耳蜗植入者，通道1为同侧通道
- `frames`：取值为2500，表示重复试次（epoch）的数量

最后一个字段为`values`，存储原始脑电数据，维度为`13750×2×2500`：其中13750为采样点数，2为通道数（通道1采集自左耳耳垂A1，通道2采集自右耳耳垂A2），2500为重复试次数量。
数据采集时间：2017年9月

## 人工头伪迹录制数据（BinKhamis 等人的《CI 语音ABR 伪迹数据.zip》）
该文件夹包含6个人工头伪迹录制文件：
- CI07_Artefact_40da_neg.mat：基于最接近CI07的MAP的伪迹，对应反转极性（neg）`40 da`刺激的录制结果
- CI07_Artefact_40da_pos.mat：基于最接近CI07的MAP的伪迹，对应标准极性（pos）`40 da`刺激的录制结果
- CI08_Artefact_40da_neg.mat：基于最接近CI08的MAP的伪迹，对应反转极性（neg）`40 da`刺激的录制结果
- CI08_Artefact_40da_pos.mat：基于最接近CI08的MAP的伪迹，对应标准极性（pos）`40 da`刺激的录制结果
- CI09_Artefact_40da_neg.mat：基于最接近CI09的MAP的伪迹，对应反转极性（neg）`40 da`刺激的录制结果
- CI09_Artefact_40da_pos.mat：基于最接近CI09的MAP的伪迹，对应标准极性（pos）`40 da`刺激的录制结果

伪迹录制文件格式为`.mat`（MATLAB，MathWorks），每个文件为`10988×2500`的矩阵：其中10988为采样点数量，2500为重复试次（epoch）数量。
伪迹录制时间：2018年6月