MCD's blog

The Emotiv EPOC
headset is the most advanced mass-produced consumer-grade EEG headset on
the market. It has 14 electrodes (as opposed to NeuroSky's
single-electrode and OCZ's three-electrode headsets) and it can also
detect head movement using a built-in gyroscope. The EPOC uses its
sensors to detect changes in electrical activity using EEG monitoring
techniques that let it detect facial gestures and estimate roughly
relative mood states.

Emotiv's intent with the EPOC is to add a whole new dimension to
videogames and other software applications that can't be done with other
PC input devices. Changes in your mental state and face can be used to
control software applications by detecting and interpreting signals from
the headset. Applications can also monitor those signals and alter
their behavior based on that information. This opens the door to
videogames that reduce their difficulty level if you're frowning or
appear agitated, software programs that offer you help if they
determines you're frustrated, and other applications as diverse as
meditation training programs, athletic trainers, and utilities that help
the physically challenged control a PC and connected devices.

http://www.extremetech.com/article2/0,2845,2360743,00.asp

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