The Traumschreiber is a sleep mask which is equipped with various electronic elements. It can record brain and ocular activity with its four EEG/EOG channels. Moreover, it can influence the sleep with its four all-color LEDs and with sound. Real-time electrode data as well as the LED and sound stimuli are transferred to and from a PC or Android app using Bluetooth low energy. Moreover, the Traumschreiber is battery-driven, resulting in a portable device. The Traumschreiber is a scientific project featuring open source code and open hardware, i.e. you are free to build and adjust your own Traumschreiber.
More Information: http://www.alp.uni-osnabrueck.de/