Like with the Wadsworth-BCI, the Graz-BCI also works with mu- and beta-rhythm to drive either a cursor on a screen, a neuroprosthetic device, or even the natural muscles by functional electrical stimulation. Examples for the latter two cases are given in the picture (more) and on the Graz-BCI-video.

The Graz-BCI works with the users producing images of movement in their imagination. With Thomas, the paralysed person on the video, his orthosis opens on an imagination of a right-hand-movement and closes on the imagination of a foot movement.
In a long training period, the EEG-data from the sensorimotor cortex are used to establish user specific algorithms from the electrical activity caused by the "imagination". The Graz-group around Gert Pfurtscheller has also developed a remote control telemedicine system (see second picture) for the training sessions to be performed from home (more).

Graz BCI / Wadsworth BCI
mu-based > Graz BCI
thought-control of a neuroprosthesis
telemonitoring the Graz-BCI
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What can they do with the neuroprosthesis?

After several months of training, a paralysed person wearing an orthosis that opens and closes a paralysed hand is capable of grabbing a piece and even eating, say, an apple with it. The persons presented here were victims of accidents. Their arms are paralysed, but other muscles still work, making it easier for them to control an orthesis then the same task would be for someone with ALS, which usually affects larger and less clear cut parts of the body's muscles.

How far are we? Learn here what researchers all over the world are doing in BCI-research right now.