NeuBCI-AAD

Each condition includes 60 trials, and each trial lasts approximately 1 minute.EEG Acquisition and PreprocessingEEG signals were recorded using a NeuroScan system with a 64-channel cap arranged according to the international 10/20 system. The sampling rate is 1000 Hz, and electrode impedance is maintained below 20 kΩ.2. Dataset File OrganizationThe stimuli folder contains the audio stimuli used in the experiment.

The file trial1m.wav represents the speech signal of the male speaker in the first trial, while trial1f.wav represents the speech signal of the female speaker (similarly for other trials).There are 20 folders named sub1 to sub20, corresponding to the 20 participants.For each participant, the processed_data folder contains preprocessed EEG data files named in the format trial_{trial_id}.npz.Each EEG file for a single trial includes a field named eeg_trial, which is a NumPy array of shape [n_channels, n_samples], representing the EEG recordings.The raw_data folder for each participant contains the original EEG data in .cnt format.

If a log file is present, it records events such as trial termination or repetition, which should be considered during preprocessing.The answer folder contains files named sub{id}.xlsx, which store participants’ responses. These responses are used to assess attention levels. Additionally, the trial column in the Excel file indicates which audio stream the participant was instructed to attend to during each trial.

For example, 5f indicates that in the 5th trial, the participant was instructed to attend to the female speaker.