Replication Data for: Dataset \"P3Numbers_20150126_f_12_004\" available at http://eegdatabase.kiv.zcu.cz/experiments-detail?DEFAULT_PARAM_ID=641

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（Guess the number）是一项基于P300的简易脑机接口（brain-computer interface）实验。该实验的流程为：要求被试从1至9中选取一个数字，随后向其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，尝试推断被试所想的数字。本实验共有250名学龄儿童参与，实验在捷克共和国的中小学内开展。研究采集了3个脑电图（Electroencephalogram, EEG）通道（Fz、Cz、Pz）的脑电数据与刺激标记信号，并完成存储。此外还收集了被试的额外元数据，包括性别、年龄、被试所想的数字、实验人员的猜测结果，以及其他多项有趣的附加信息。该数据集以Brain Vision格式存储。