1. Purpose and features

Purpose and features

EEGLAB plugin Darbeliai was created with intention to facilitate batch processing of selected EEG data files in graphical user interface (GUI). Darbeliai uses EEG data files in various formats (*.set, *.edf, *.cnt and others) as input directly, and outputs processed data directly to files in EEGLAB data format (*.set), so this in contrast to EEGLAB itself where user must work with EEG datasets. So (in most cases) you no longer need to care about EEG data importing from raw EEG files into EEGLAB dataset and writing processed data back to file.

In Lithuanian – the most archaic live Indoeuropean language – darbeliai means the little works. As of Darbeliai 2015.09.03 version, this EEGLAB plugin allows you to accomplish these jobs:

• rename EEG data files according dataset attributes (like subject, group, experiment condition or session), also extract these attributes from filenames and edit them manually (only EEGLAB *.set files supported for this task);
• execute sequence of selected EEG processing tasks; results of each separate task can be saved with different filename suffix and/or into different subfolder.
• simple and conditional epoching (e.g. by particular stimulus if particular response exist);
• ERP visualization and feature extraction, exporting not only for individual files, but also for averages of subjects, groups, sessions and/or conditions, filtered by event type, channels and for custom time window;
• EEG spectrum visualization and spectral power analysis for both absolute and relative power in separate customizable power bands, though delta, theta, alpha, beta are predefined;
• custom command execution for list of data files.
• comfortably view (scroll) your EEG records using keyboard and mouse wheel.
• compare two EEG records (e.g. pre- and post- processing records).

Other features:

• filename filtering separately for listing available files and for selecting them;
• ability to work with multiple subdirectories;
• Loading files into EEGLAB as datasets after completing job;
• RAGU integration in menu, ERP data exporting for RAGU;
• two languages supported (Lithuanian and English) and it would be easy to add more;
• multiplatform: tested in Windows and Linux, with systems of different encodings, but should work in MAC OS also.