eeg_retrieve# eeg_retrieve(ALLEEG, index)# Return dataset(s) from ALLEEG using EEGLAB-facing 1-based indices. Scalar index 0 returns an empty EEG dataset and leaves ALLEEG unchanged, matching EEGLAB’s no-current-dataset state. Parameters: ALLEEG (list[dict[str, Any]] | None) index (int | list[int] | tuple[int, ...]) Return type: tuple[dict[str, Any] | list[dict[str, Any]], list[dict[str, Any]], int | list[int]]
