Replication Data for: Dataset \"P3Numbers_20150507_f_14_003\" available at http://eegdatabase.kiv.zcu.cz/experiments-detail?DEFAULT_PARAM_ID=578

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」是一项基于P300的简易脑机接口（brain-computer interface, BCI）实验。该实验的实施流程为：要求受试参与者在1至9的范围内选定一个数字，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（event-related potential, ERP）波形，尝试推断参与者脑海中所想的数字。本次实验共招募250名学龄儿童，实验开展于捷克共和国的中小学中。实验存储了3个脑电图（electroencephalogram, EEG）通道（Fz、Cz、Pz）的脑电数据及刺激标记信号，同时收集了参与者的相关元数据，涵盖性别、年龄、参与者所想的数字、实验人员的猜测结果，以及其他多项附加信息。所有实验数据均以Brain Vision格式进行存储。