Brain-Computer Interface (BCI)
An
Electroencephalogram based Brain-Computer-Interface (BCI) provides a new
communication channel between the human brain and a computer. Patients who
suffer from severe motor impairments (late stage of Amyothrophic
Lateral Sclerosis (ALS), severe cerebral palsy, head trauma and spinal
injuries) may use such a BCI system as an alternative form of communication by
mental activity [1].
In fact, changes of brain activity induced by a mental task
are detected / classified. The BCI system transforms these changes into a
control signal which can be used for communication or control of external
devices.
Brain-Computer Interface (BCI) applications
(by courtesy of GUGER TECHNOLOGIES OEG )
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Biosignal Amplifiers (g.Bsamp,
g.USBamp g.MOBIlab+); Data
acquisition software (g.Recorder, Pocket
PC Recording Software ); Accessories (caps,
sensors, electrodes and cables); … for
more data please search on http://www.gtec.at/content.htm |
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BCI
equipment |
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Topics:
1. Definition of a Brain
Computer Interface;
2. Slow cortical
potentials (SCP);
3. Changes of oscilatory activity (ERD/ERS);
4. Evoked Potentials
(P300 approach);
5. Experimental session performed
with GTEC equipment.
[1] C. Guger, A. Schlögl, C. Neuper, D. Walterspacher, T. Strein, and G. Pfurtscheller,
"Rapid Prototyping of an EEG-based brain-computer interface (BCI),"
IEEE Trans. Rehab.