EEG dataset for speech decoding

EEG dataset for speech decoding
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Dataset Overview
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This dataset contains EEG recordings from a phoneme discrimination task with TMS.
The data were collected during two related studies in 2019 and 2021.

Study 1 (2019, Session 01):
- 8 participants (P01-P08)
- Focus on CV and VC phoneme pairs
- 2 blocks: CV pairs and VC pairs
- TMS targeted to LipM1 (-56, -8, 46) and TongueM1 (-60, -10, 25)

Study 2 (2021, Session 02):
- 16 participants (S01-S16)
- Expanded to include single phonemes and phoneme triplets
- 4 blocks: single phonemes, CV pairs, real words, and pseudowords
- Additional TMS targets included Broca's area (BA 44: -51, 7, 23) and verbal memory region (BA 6: -46, 1, 41)

Task Description
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Participants listened to speech sounds and identified stimuli with a button-press response.
The stimuli included:
1. Single phonemes - Consonants (/b/, /p/, /d/, /t/, /s/, /z/) and vowels (/i/, /E/, /A/, /u/, /oU/)
2. Phoneme pairs - CV and VC combinations of the phonemes
3. Phoneme triplets - Real and pseudowords constructed of CVC sequences

TMS Methodology
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Detailed information about TMS parameters can be found in the sourcedata/tms_metadata/tms_parameters.json file.
TMS was applied using a Magstim Super Rapid Plus1 stimulator with a figure-of-eight 40 mm coil.
Stimulation was delivered at 110% of resting motor threshold as paired pulses with 50ms interpulse interval.

Detailed information about the methodology and results can be found in the associated publication:
Moreira et al. "An open-access EEG dataset for speech decoding: Exploring the role of articulation and coarticulation"

Directory Structure
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The dataset follows BIDS convention with the following structure:
/sub-[subject]/ses-[session]/eeg/
Where subject is P01-P08 for Study 1 and S01-S16 for Study 2.
Session is 01 for Study 1 and 02 for Study 2.

Contact Information
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For questions about this dataset, please contact Lindy Comstock at [e-mail]

用于语音解码的脑电图（EEG）数据集
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数据集概览
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本数据集包含结合经颅磁刺激（Transcranial Magnetic Stimulation, TMS）的音素辨别任务的脑电图记录数据。该数据集的数据采集自2019年与2021年的两项相关研究。

研究1（2019年，会话01）：
- 8名受试者（编号P01-P08）
- 实验聚焦于辅音-元音（CV）与元音-辅音（VC）音素对
- 分为2个实验块：CV音素对块与VC音素对块
- 经颅磁刺激靶点为唇部初级运动皮层（LipM1）(-56, -8, 46)与舌部初级运动皮层（TongueM1）(-60, -10, 25)

研究2（2021年，会话02）：
- 16名受试者（编号S01-S16）
- 实验范围拓展至单音素与音素三元组
- 分为4个实验块：单音素块、CV音素对块、真实词汇块与伪词汇块
- 新增经颅磁刺激靶点：布洛卡区（Broca's area，BA 44：-51, 7, 23）与言语记忆脑区（BA 6：-46, 1, 41）

任务描述
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受试者聆听语音刺激，并通过按键反应完成刺激物识别任务。本次实验的刺激物包含以下三类：
1. 单音素：包括辅音（/b/、/p/、/d/、/t/、/s/、/z/）与元音（/i/、/E/、/A/、/u/、/oU/）
2. 音素对：由上述音素组合而成的CV与VC音素对
3. 音素三元组：由辅音-元音-辅音（CVC）序列构成的真实词汇与伪词汇

经颅磁刺激方法学
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经颅磁刺激参数的详细信息可参见sourcedata/tms_metadata/tms_parameters.json文件。
本次实验采用Magstim Super Rapid Plus1型刺激器搭配8字形40mm线圈实施经颅磁刺激。刺激强度设置为静息运动阈值的110%，采用脉冲间隔为50ms的成对脉冲刺激模式。

本数据集的方法学细节与实验结果可参见相关学术出版物：Moreira等人发表的《用于语音解码的开放获取脑电图数据集：探究发音与协同发音的作用》（"An open-access EEG dataset for speech decoding: Exploring the role of articulation and coarticulation"）

数据集目录结构
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本数据集遵循脑成像数据结构（Brain Imaging Data Structure, BIDS）规范，目录结构如下：
/sub-[subject]/ses-[session]/eeg/
其中，subject对于研究1为P01-P08，研究2为S01-S16；session对于研究1为01，研究2为02。

联系方式
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若对本数据集有任何疑问，请联系Lindy Comstock，邮箱地址为[e-mail]

搜集汇总

背景与挑战

背景概述

该数据集包含两个相关研究中的EEG记录，用于音素辨别任务，共24名参与者。数据集重点关注单音素、音素对和音素三元组的神经解码，并使用了TMS技术，遵循BIDS标准组织。