Investigation of useful information identity on brain lobes during typing for biometric authentication

Electroencephalogram (EEG) is one of the most practical device to record the brain’s electrical activity, and often been used in the diagnosis of brain diseases over the years. Recently, the biometric authentication and identication by using EEG has become a great way to confirm a user’s identity. This paper investigated the biometric authentication information in brain lobes such as frontal lobe, parietal lobe, temporal lobe and occipital lobe based on frequency bands approach. The power spectrum density (PSD) features were extracted from 32 EEG channels recorded signals during typing task. At that point, signal processing techniques such as such as pre-processing, feature extraction and classification have been carried out. The obtained results proved that the frontal lobe is related to the thinking whereas the parietal lobe is related to the spelling process when the users type their own names (Task 1) and random names given (Task 2). The users are more familiar to typing task 1 rather than typing task 2.