[Eeglablist] EEG equipment

[Tyler Grummett]

Dear Dr. Kornilov and Guruprasad Madhale Jadav,


Im writing to inform you that EEG systems comparison paper is now downloadable at: http://stacks.iop.org/0967-3334/36/1469

Measurement of neural signals from inexpensive, wireless and dry EEG systems - Abstract - Physiological Measurement - IOPscience
Electroencephalography (EEG) is challenged by high cost, immobility of equipment and the use of inconvenient conductive gels. We compared EEG recordings obtained from three systems that are inexpensive, wireless, and/or dry (no gel), against recordings made with a traditional, research-grade EEG system, in order to investigate the ability of these ‘non-traditional’ systems to produce recordings of comparable quality to a research-grade system. The systems compared were: Emotiv EPOC (inexpensive and wireless), B-Alert (wireless), g.Sahara (dry) and g.HIamp (research-grade). We compared the ability of the systems to demonstrate five well-studied neural phenomena: (1) enhanced alpha activity with eyes closed versus open; (2) visual steady-state response (VSSR); (3) mismatch negativity; (4) P300; and (5) event-related desynchronization/synchronization. All systems measured significant alpha augmentation with eye closure, and were able to measure VSSRs (although these were smaller wit
Read more...<http://stacks.iop.org/0967-3334/36/1469>


It is open access so anyone can view it.


Here is the abstract, if you were curious:

Electroencephalography (EEG) is challenged by high cost, immobility of equipment and the use of inconvenient conductive gels. We compared EEG recordings obtained from three systems that are inexpensive, wireless, and/or dry (no gel), against recordings made with a traditional, research-grade EEG system, in order to investigate the ability of these 'non-traditional' systems to produce recordings of comparable quality to a research-grade system. The systems compared were: Emotiv EPOC (inexpensive and wireless), B-Alert (wireless), g.Sahara (dry) and g.HIamp (research-grade). We compared the ability of the systems to demonstrate five well-studied neural phenomena: (1) enhanced alpha activity with eyes closed versus open; (2) visual steady-state response (VSSR); (3) mismatch negativity; (4) P300; and (5) event-related desynchronization/synchronization. All systems measured significant alpha augmentation with eye closure, and were able to measure VSSRs (although these were smaller with g.Sahara). The B-Alert and g.Sahara were able to measure the three time-locked phenomena equivalently to the g.HIamp. The Emotiv EPOC did not have suitably located electrodes for two of the tasks and synchronization considerations meant that data from the time-locked tasks were not assessed. The results show that inexpensive, wireless, or dry systems may be suitable for experimental studies using EEG, depending on the research paradigm, and within the constraints imposed by their limited electrode placement and number.

Sorry for the shameful plug of my paper.
Kind regards,

Tyler Grummett


*************************

Tyler Grummett ( BBSc, BSc(Hons I))
PhD Candidate
Brain Signals Laboratory
Flinders University
Rm 5A301
Ext 66125
________________________________
From: Kornilov, Sergey <sergey.kornilov at yale.edu>
Sent: Friday, 13 March 2015 4:46 AM
To: Tyler Grummett
Subject: Re: [Eeglablist] EEG equipment

Dear Tyler,

Is there any way you could share the draft of your manuscript with me? I can promise not to share it with anyone. The reason I'm interested is because I'm thinking about using some of these systems in my research in developmental populations in countries where access to traditional equipment is limited.

Thanks in advance - and I would, of course, understand if you suggest I wait for the accepted/published manuscript.

Best regards,

Sergey

Sergey A. Kornilov, Ph.D.
Postdoctoral Associate
Child Study Center
School of Medicine
Yale University
230 South Frontage Rd
New Haven, CT 06519
http://www.yale.edu/eglab

On Mar 10, 2015, at 2:32 AM, Tyler Grummett <tyler.grummett at flinders.edu.au<mailto:tyler.grummett at flinders.edu.au>> wrote:


Hello Guruprasad,


I apologise in advance for the shameful plug of my own paper.


I have a paper currently being reviewed, where I have done a comparison between the Emotiv, B-Alert, g.Sahara and g.HIamp (using gamma cap), where the g.HIamp was our gold standard. Its called 'Measurement of neural signals from inexpensive, wireless, and dry EEG systems' and I will hopefully be publishing it in the journal 'physiological measurement'. I compared four common neurological phenomena, the Berger effect, SSR, Mis-Match Negativity (MMN) and Event-Related Synchronisation/Desynchronisation (ERS/ERD).


I found that the B-Alert was the best system compared with our gold standard. It's signal quality is almost identical to the g.HIamp.


Hopefully that helps, keep an eye out for my paper if it gets accepted.


Kind regards,


Tyler



*************************

Tyler Grummett ( BBSc, BSc(Hons I))
PhD Candidate
Brain Signals Laboratory
Flinders University
Rm 5A301
Ext 66125


________________________________
From: eeglablist-bounces at sccn.ucsd.edu<mailto:eeglablist-bounces at sccn.ucsd.edu> <eeglablist-bounces at sccn.ucsd.edu<mailto:eeglablist-bounces at sccn.ucsd.edu>> on behalf of Guruprasad Madhale Jadav <guruprasadjadav at hotmail.com<mailto:guruprasadjadav at hotmail.com>>
Sent: Monday, 9 March 2015 8:28 PM
To: eeglablist at sccn.ucsd.edu<mailto:eeglablist at sccn.ucsd.edu>
Subject: [Eeglablist] EEG equipment

Hi,
    I am Guruprasad Madhale Jadav, an engineer and a PhD student in the Techniki Fakultet, University of Rijeka, Croatia. I am working with EEGlab, Matlab and BCI 2000 to do some basic experiments with EEG and ERP in the field of signal processing.
    I am interested to buy some entry level research grade EEG equipment for our lab within a price range of 2000 $, I have Emotiv's EEG reserach headset and I was looking for a little better equipment that would best suite our needs.
    Any suggestion based on your personal experience and research is appreciated.

Best Regards,
Guruprasad Madhale Jadav
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