NeuroSky

NeuroSky, chaired by Stanley Yang, is a company based in San Jose, California, United States. Their technology is an example of a "Brain-Computer Interface."

Electroencephalography uses electrodes attached to the head to read the output of brain signals, small electrical neural impulses generated by thought and mental state.

Neurosky's hardware, the Think-Gear module, uses their patented dry-active sensor technology to read the brain signals. The electrodes of standard medical electroencephalography use a conductive gel to facilitate the reading of the signals. Dry-active sensor technology does not need such a gel and unlike medical EEG, which use many electrodes, Dry-active only uses one.