To view the plugin source code, please visit the plugin’s GitHub repository.

NWBio EEGLAB plugin

This plugin imports data from the Neurodata Without Borders data format. Time series, channel information, and event information are imported. Use the EEGLAB import/export menus to import/export files, or use the command line function pop_nwbimport.m or pop_nwbexport.m

Example

Export the tutorial EEGLAB data.

pop_nwbexport(EEG, 'test.nwb');

Import the file exported above.

EEG = pop_nwbimport('test.nwb');

Use with EEGLAB

Use menu item File > EEGLAB extensions and search for the “nwbio” plugin. Once you have found it install it. Then, use the menu item File > Import data > From NWB file to import a file. Once you have selected a file, the following graphical interface will pop up.

It lets you decide which event information you want to use as the primary information for EEGLAB (EEGLAB event type). EEGLAB perform most operations on event types, although it is also possible to use other fields. Note that all fields will be imported in EEGLAB, but the primary field will be duplicated and in the event type field.

The checkbox allows importing neurons’ spikes as EEGLAB event when they are present in the data file (when greyed out, spikes are not present). Note that EEGLAB will not import all NWB information (such as spacial movement, calcium imaging, etc…). This EEGLAB plugin only import electrophysiology data.

To export EEG or iEEG data, use the menu item File > Export > Data to NWB file. The following graphical interface will pop up, allowing you to enter NWB-specific information.

Most entries are NWB-specific, so you may refer to the NWB documentation for more information. The last two entries are specific to EEGLAB. “Event fields to export” lists the EEGLAB event fields available to export. Event onset and duration are exported by default and are not listed. “Export channel (x, y, z) locations” allow exporting channel locations. If you use the template channel location, you may leave this option unchecked.

Version history

1.0 - import, and export, tested on multiple files