Shown in consumer form. We tried it out, and it's awesome.
February 21, 2008 - Almost exactly one year ago at GDC 2007, IGN Gear was treated to an exclusive closed door demonstration hosted by Emotiv, a previously shadowy corporation that had invested years in developing technologies for decoding brain waves and translating them to gaming. We were definitely impressed (read our impressions), and when we got word that the company was ready to show a finalized consumer version of the product at this year's GDC, we were stoked.
Today at GDC 2008, we met up with Emotiv to go hands (brain?)-on with the new gear Emotiv has officially dubbed the EPOC Neuroheadset. The device looks similar to prototype and beta versions we've seen before, but is now even more minimalist and sexy, in a highly futuristic sense. Emotiv was keen to point out that the consumer EPOC makes strides in the field of neuroheadsets in that its electrodes use a new and proprietary material that functions while dry, unlike most other electrodes that must be damp to sense brainwaves.
The other big news from Emotiv was, of course, details on price and release date. The company will release the EPOC before the end of 2008, priced at $299. Applications bundled with the release will include Expressiv, a cool chat client that leverages the ability of the EPOC to register complex facial expressions, including smiling, frowning, eyebrow movement, eye movement, winking, and other motions to allow for communications free from shorthand like lol and : ).

LINK to full IGN story