Verbal instructions and tones are presented via in-ear phones. For assessment, numerous frequent stimuli are randomly mixed with some rare target stimuli (e.g. tones with a different pitch).
Vibrotactile stimulators can be attached to different areas of the patient’s body, such as the hands and stomach. If the patient is able to understand and follow the training instructions by counting the required stimuli, this approach can be used for communication.
In addition, imagined movements (e.g. of the left or right hand) can also be used to identify mental activity in DOC patients. If the patient is able to understand and follow the training instructions by performing the required motor imagery, it can be used for communication.
The mindBEAGLE software measures the brain's responses to certain stimuli and looks for significant differences in EEG patterns at specific times. The results are summarized in a report.
The g.GAMMAsys EEG cap is used to record brain activity with 16 electrodes, which are automatically analysed and classified by the mindBEAGLE software.
Vibrotactile Stimuli are used for assessment via Evoked potentials (EPs) that allow the patient to say "YES" or "NO" by focusing on the left or right hand.