Neural oscillations induced by IAPS pictures (session 23)

The data were collected to perform research on the possibility of controlling the content displayed on the monitor screen using human emotional states extracted from EEG signals. The dataset contains recordings of 14-channel EEG signals gathered from seven persons aged 23 - 35 within 26 sessions, during which 45 different random photos, taken from the International Affective Picture System – IAPS collection, were presented. All sessions were collected using the Emotiv Epoc+ device at the 256 Hz sampling rate, equipped with 14 electrodes arranged according to the 10-20 standard system.
The dataset contains three files:(1) session23_EEGLogger.csv,(2) session23_emotion_picture_timestamp.csv,(3) session23_power_brainwaves.csv.
The time-dependent (timestamp is in seconds) raw EEG signals (given in micro Volts) for all electrodes (AF3, F7, F3, FC5, T7, P7, O1, O2, P8, T8, FC6, F4, F8, AF4) are in the file (1). The timestamps (given in seconds) of displaying pictures, self-assessments of the emotional states (levels: sad, neutral, smiling) and the IAPS pictures ID are in the file (2). The display time of each picture is constant and equals 5 seconds. The low-resolution power of brainwaves (theta, alpha, low beta, high beta, and gamma) recorded for all electrodes during the session are in the file (3).

本数据集的采集初衷为研究利用从脑电（EEG，Electroencephalogram）信号中提取的人类情绪状态，实现对显示器屏幕显示内容进行控制的可行性。该数据集包含7名年龄介于23至35岁的受试者在26次实验会话中采集的14通道脑电信号记录，实验期间共呈现了取自国际情感图片系统（IAPS，International Affective Picture System）库的45张随机图片。所有实验数据均通过Emotiv Epoc+设备采集，采样率为256Hz，该设备配备了依照10-20标准系统布局的14个电极。

本数据集包含三个文件：(1) session23_EEGLogger.csv、(2) session23_emotion_picture_timestamp.csv、(3) session23_power_brainwaves.csv。

文件(1)存储了所有电极（AF3、F7、F3、FC5、T7、P7、O1、O2、P8、T8、FC6、F4、F8、AF4）的时域原始脑电信号，单位为微伏，时间戳单位为秒。文件(2)包含图片呈现的时间戳（单位为秒）、情绪状态自我评估结果（分为悲伤、中性、微笑三个等级）以及对应的IAPS图片ID。每张图片的呈现时长固定为5秒。文件(3)存储了实验期间所有电极记录的脑电波低分辨率功率数据，涵盖θ波、α波、低β波、高β波与γ波。