An EEG Imagined Speech Dataset for BCI Applications with Binary and Numerical Stimuli

The dataset contains electroencephalographic (EEG) recordings were collected from 30 healthy university students (mean age 20.53 ± 1.54 years; 8 female, 22 male) during imagined speech tasks for Brain-Computer Interface (BCI) applications. All participants provided written informed consent, and the study was approved by the Institutional Research Ethics Committee of Tecnológico de Monterrey (protocol code CA-EIC-035, July 2024).Utilizing the Unicorn Hybrid Black wireless headset (g.tec neurotechnology GmbH) with 8 electrodes which were ccommodated according to the 10-20 international system (Fz, C3, Cz, C4, Pz, PO7, Oz, PO8) with a sampling rate of 250 Hz at 24-bit resolution. Two paradigms were implemented in Spanish: a binary paradigm ('Yes' and 'No') and numerical paradigm ('One', 'Two' and 'Three').This dataset is realeas under CC BY-NC-SA 4.0 license and is intended to support further exploration in computational neuroscience, biomedical engineering, and artificial intelligence.<br>

本数据集收录了用于脑机接口（Brain-Computer Interface, BCI）应用的想象语音任务脑电图（electroencephalographic, EEG）记录，采集自30名健康在校大学生，其年龄均值为20.53±1.54岁，其中女性8名、男性22名。所有参与者均签署了书面知情同意书，本研究经蒙特雷理工学院（Tecnológico de Monterrey）机构研究伦理委员会批准，方案编号为CA-EIC-035，批准时间为2024年7月。实验采用g.tec神经技术有限公司的Unicorn Hybrid Black无线脑电采集头环，配备8个依照国际10-20系统放置的电极（Fz、C3、Cz、C4、Pz、PO7、Oz、PO8），采样率为250Hz，分辨率为24位。本次实验设置了两种西班牙语范式：二分类范式（“是”与“否”）以及数字范式（“一”“二”“三”）。本数据集以CC BY-NC-SA 4.0协议发布，旨在为计算神经科学、生物医学工程及人工智能领域的后续研究探索提供支撑。