For the first time, information retrieval seems possible with the help of EEG, enhanced with machine learning. Electroencephalography (EEG) is a monitoring method to record electrical activity of the brain. It is typically noninvasive, with electrodes placed along the scalp.
In a study conducted by the Helsinki Institute for Information Technology (HIIT) test subjects read the introductions of Wikipedia articles of their own choice. During the reading session, the test subjects’ EEG was recorded, and the readings were then used to model which key words the subjects found interesting.
With sensor technology advancing, EEG sensors can eventually be worn more comfortably. This way, machines could assist humans by automatically observing, marking and gathering relevant information by monitoring EEG responses