Replication Data for: Dataset \"P3Numbers_20150507_f_14_005\" available at http://eegdatabase.kiv.zcu.cz/experiments-detail?DEFAULT_PARAM_ID=580

Guess the number is a simple P300-based brain-computer interface experiment. Its aim is to ask the measured participant to pick a number between 1 and 9. Then, he or she is exposed to corresponding visual stimuli and experimenters try to guess the number thought while observing event-related potential waveforms on-line. 250 school-age children participated in the experiments that were carried out in elementary and secondary schools in the Czech Republic. Electroencephalographic data from three EEG channels (Fz, Cz, Pz) and stimuli markers were stored. Additional metadata about the participants were collected (gender, age, the number thought by the participant, the guess of the experimenters, and various interesting additional information). The data are stored in the Brain Vision format.「猜数字」是一款基于P300的简易脑机接口（brain-computer interface）实验。该实验的设计目标为：要求被试从1至9中选取一个数字，随后向被试呈现对应的视觉刺激，实验人员通过在线观测事件相关电位波形，以推测被试所想的数字。本次实验共有250名学龄儿童参与，实验开展于捷克共和国的中小学内。研究人员存储了来自3个脑电图（Electroencephalogram, EEG）通道（Fz、Cz、Pz）的脑电数据以及刺激标记信息。此外还收集了被试的相关元数据，包括性别、年龄、被试所想数字、实验人员的猜测结果，以及其他各类有趣的补充信息。该数据集以Brain Vision格式存储。