This diploma thesis represents a process of development of a Brain-Computer
Interface (BCI) based on eyes movement. The BCI systems acquire and analyse
the brain activity and convert it to suitable commands. The goal of this
diploma thesis was to develop an interface that enables a user to move
the cursor on the screen. For measuring the brain activities, we used the
Emotiv EPOC headset, which is a representative of very affordable systems that
enable acquisition of the electroencephalogram (EEG). In the scope of this thesis,
we also developed an application for acquiring and visualizing the EEG signals
and their spectra in real time. We used the application to assess a various of
techniques of conscious influence on the EEG signals, of which the most suitable
appeared to be the technique of moving the eyes to the left and right.
On the basis of this technique, we defined a protocol, which using initial
calibration, allows a user moving of the cursor on the screen in the horizontal
direction. We tested the functionality of the interface using a test by which the
test subjects performed movements of the cursor, as required by the testing program.
In 85.5% of the attempts, the test subjects managed to perform the requested cursor
movement within two seconds.
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