SSVEPSteady State Visually Evoked Potential
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This breakthrough in gaming uses a type of brain signal called the steady-state visual evoked potential, or SSVEP, which is picked up by a few electrodes mounted on the head.
The main principle of SSVEP is that the EEG signals recorded from the occipital lobe region (see figure 1) of a user who is focusing on a light that is flickering with some frequency, will match the same frequency.
Rossion said that an advantage of using this highly sensitive SSVEP methods is that it can be used and compared objectively in different human populations - adults, infants, children, neurological patients, people with long-life face recognition impairments or autism - without requiring complex instructions and a long testing duration.