I my opinion, the traditional manually placed electrodes are the best technic although tiresome. Electrodes also have a life span of appromately 6 months.

You'd be better off getting a real EEG headset / cap, even 19 channel from Mitsar if you really want to record good EEGs. Clean them with a toothbrush and ivory after every use when gel is used and your electrodes will last a lot longer.

I've been working with active and passive EEG electrodes. In my experience active the active ones are a little bit faster to set up and the signal is less noisy because there is additional amplification of the signal in each electrode. I've used head sets from gtec (g.LADYbird electrodes) and Brain Products (actiCAP) and had good experiences with both of them.

Systems, Subjects, Sessions: To What Extent Do These Factors Influence EEG Data? "We tested four EEG systems: two standard research-grade systems, one system designed for mobile use with dry electrodes, and an affordable mobile system with a lower channel count."

https://www.frontiersin.org/article/10.3389/fnhum.2017.00150

Dear Khizar,

this seems not only a question of price but also data recording quality and research question. What are you interested in investigating? And will low density montages like the Emotiv headset be sufficient for that?

If you answer this question with yes, there are several systems with relatively low number of channels that are affordable and provide good quality. You will find examples at the follwoing vendors: Brain Products, mBrain Train, Cognionics, and others.

There is also a nice way to make use of the Emotiv amp as described in Stefan Debener's paper from 2012 ( Debener, S., Minow, F., Emkes, R., Gandras, K., & Vos, M. (2012). How about taking a low‐cost, small, and wireless EEG for a walk?. Psychophysiology, 49(11), 1617-1621). Might be worth a try to also improve life expectation of your (now wet) electrodes?

Best,

Klaus

Dear Khizar,

I agree with Klaus Gramann.

We used the modified version of EPOC, keeping the electronics but fitting it to an EEG headcap (www.easycap.de used to have a kit ready for purchase), and the montage has been reliable and durable. Using conductive gel rather than saline solution is also an advantage as it dries out slower and impedances are kept low.

Best,

Panos

Wearable Sensing offers a full suite of research-grade, wireless dry electrode EEG systems, motion sensor (IMU) systems, and software for neuroscience research, BCIs, consumer neuroscience, and many more applications. We would love to discuss your project with you.

www.WearableSensing.com

In my experience, the emotiv headsets are a little bit difficult to set up and as you mentioned, they're aren't very durable. Many of the higher end mobile headsets (cognionics, mbraintrain etc.) offer good signal quality but this comes with a high price tag of $8,000 or higher.

I've been working at Avertus Inc. for the past year and we've been able to design a dry-electrode headset that has similar signal quality, when compared to wet systems like natus and biosemi, but is a fraction of the price.

The only drawback is our channel placements for some users. We love collaborating with researchers so if you have any questions feel free to email me at [email protected] or visit our website www.avertus.ca

Hi,

please check out the Unicorn Brain Interface: www.unicorn-bi.com. It uses hybrid electrodes that allow high quality dry and wet recordings and give perfect BCI accuracy. Electrodes are placed on important regions. Price: 990 EURO.

Christoph

The openBCI peformed better than the Neurosky and Emotiv+ in terms of applicability and durability.

Hi Khizar - do you have a photo of the corrosion? How you store and maintain the headset can influence corrosion.