EEGIS - Electroencephalogram Imagined Speech dataset

This Dataset contains Imagined Speech EEG signals. The signals were recorded from 10 participants while they were imagined saying eight different Spanish words: - 'Sí' - 'No' - 'Baño' - 'Hambre' - 'Sed' - 'Ayuda' - 'Dolor' - 'Gracias' plus a rest state. The words translated are 'Yes', 'No', 'Bath', 'Hunger', 'Thirst', 'Help', 'Pain', 'Thank you'. The EEG signals were recorded using the Emotiv EPOC+ device, equipped with 14 channels and operated at a sampling rate of 128 Hz. The data consist of chunk records of 1 second each, for that reason, data has a shape of 14 channels and 128 samples (128 Hz x 1 second) for each recording. Also, each chunk was filtered into five frequency bands: delta, theta, alpha, beta and gamma. Therefore, the dataset has 6 folders (raw data plus five frequency folders) where each folder contains nine folders (one corresponding to each class) where each folder have its corresponding CSV files. Class folders encoding: - class_0 : rest state - class_1 : Ayuda - class_2 : Baño - class_3 : Dolor - class_4 : Gracias - class_5 : Hambre - class_6 : No - class_7 : Sed - class_8 : Sí