[Eeglablist] how to analyze combine data of emotiv EEG-RED Eyetrack data using EEGLAB

Dr. Ingmar Gutberlet ingmar.gutberlet at blindsight.de
Thu May 8 00:22:05 PDT 2014

Dear Naveen,

what Olaf is writing about below is a very useful EEGLAB plugin for the integration of ET data recorded with SMI or SR Research trackers with any EEG file and format that EEGLAB supports. His plugin is definitely worth checking out, but I am afraid it does not hold a solution to your problem.

From what you write below, you are obviously using your SMI system with the optional Emotiv package, which will give you combined datasets where the EEG data is recorded alongside the ET data and where both can then be exported together to SMI text export. To my knowledge, this data format currently cannot be read by Olaf’s plugin and neither can it be read directly by EEGLAB.

However, since Olaf’s EYE-EEG plugin already now reads SMI data in text format anyway, perhaps we can convince him to support the addition of a few columns of integrated Emotiv EEG data … ;-)


Ingmar Gutberlet, Ph.D.
BlindSight GmbH
President, CEO

Von: eeglablist-bounces at sccn.ucsd.edu [mailto:eeglablist-bounces at sccn.ucsd.edu] Im Auftrag von Olaf Dimigen
Gesendet: Mittwoch, 7. Mai 2014 10:28
An: eeglablist at sccn.ucsd.edu
Betreff: Re: [Eeglablist] how to analyze combine data of emotiv EEG- RED Eyetrack data using EEGLAB

Dear Naveen

one option to import your eye-tracking (ET) data is to use the EYE-EEG extension for EEGLAB: http://www2.hu-berlin.de/eyetracking-eeg.

For this, you will need to first convert your binary ET data (idf) to plain text using SMI’s “idf-converter” software. Afterwards, start EEGLAB and (1) open you EEG recording, (2) parse the ET data using the EYE-EEG parser for SMI data, (3) import the parsed ET data. To import/synchronize the ET recording, you will need shared synchronization events present in both your ET and EEG recordings. If such “shared” events were not sent during the original recording, it is often possible to add them afterwards by carefully re-coding existing event names in the ET raw data text file. You can find additional information here: http://www2.hu-berlin.de/eyetracking-eeg/tutorial.html

Best, Olaf

Olaf Dimigen
Humboldt Universität zu Berlin
AG Biologische Psychologie
Tel. +49-30-2093-99126
olaf.dimigen at hu-berlin.de<mailto:olaf.dimigen at hu-berlin.de>

Von: eeglablist-bounces at sccn.ucsd.edu<mailto:eeglablist-bounces at sccn.ucsd.edu> [mailto:eeglablist-bounces at sccn.ucsd.edu] Im Auftrag von Naveen Bhardwaj
Gesendet: Dienstag, 6. Mai 2014 09:21
An: eeglablist at sccn.ucsd.edu<mailto:eeglablist at sccn.ucsd.edu>
Betreff: [Eeglablist] how to analyze combine data of emotiv EEG- RED Eyetrack data using EEGLAB

Pls help to find out , how to analysis integrated data of SMI RED eyetracker  and Emotiv EEG data.   raw data come from Experience centre software  in the form of IDF file and if i export eeg data from eyetrack software(begaze ) it is in Text file format.
waiting in anticipation plzzz help
With Warm Regards

Naveen Bhardwaj

PhD Research Scholar
Instrument Design & Development Centre
IIT - Delhi
New Delhi -16

Mob: +91-9990386215
Skype ID : naveenb13

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