A Brain Computer Interface(BCI) is a special user interface that is controlled with thoughts that are converted into electrical signals. The brain computer interface gives disabled and paralyzed people a way to control a computer. Another starting point for the use of brain computer interfaces is the combination of human artificial intelligence and artificial intelligence( AI) to form augmented intelligence(AI).
To control the computers, thoughts are obtained via implanted sensors or brain waves from electroencephalograms. These thought streams are processed by the computer and used to control prostheses, wheelchairs, robotic arms, cursors, speech aids or other disability aids, or to communicate with the environment, partners, friends, caregivers and doctors. Augmentation is expected to provide ever-improving motor and visual prostheses for a better quality of life.
There are various approaches for the implementation of brainwaves. For example, a distinction is made between invasive, non-invasive and partially invasive methods. Depending on whether the sensors for the brain waves are implanted or applied non-invasively to the scalp, the measurable signals are better or less suitable for computer control. The electrical activity of the brain shows up in electroencephalograms(EEG), which are interpreted and converted neurotechnologically. Electrode mats with many electrodes that are placed on the scalp can also be used to record brain waves.
A promising approach uses the visual system for this purpose, since the signals from the visual system are extremely reliable and can be reconstructed.