Graz BCI

A Brain Computer Interface translates simple thoughts into control signals. It enables people with physical disabilities (e.g. ALS patients) to send commands to robotic limbs or computer applications without having to move a muscle.

The BCI system developed in Graz is based on the detection and classification of motor imagery related brain activity (e.g. imagination of hand or foot movement) in the ongoing electroencephalogram (EEG). It is evident that imagination of left-hand, right-hand or foot movement cause the locally restricted and transient changes in the ongoing EEG. This effect is known as event-related desynchronization (ERD) and event-related synchronization (ERS). We use this in our BCI system to generate different control signals.