Patent Document ID: 8755879
Application ID: 14050944
Patent Flag: 1

Claim One:
1. A system for acquiring an EEG signal suitable for use in electroencephalography from a subject, the system comprising: a sensor matrix comprising a plurality of EEG electrodes configured to receive electrical signals from the brain of the subject and a plurality of pressure sensors configured to receive pressure signals indicative of the placement of the head of the subject on the sensor matrix; a processing control unit configured to perform operations comprising: obtaining EEG electrode data from the electrical signals received by the sensor matrix; determining a scalar EEG voltage for each EEG electrode; obtaining pressure data from the pressure signals received by the sensor matrix; determining a pressure normal unit vector for each EEG electrode from the pressure data; summing the product of the pressure normal unit vector and the scalar EEG voltage for each EEG electrode to obtain a relative mean EEG vector; and obtaining an absolute scalar EEG vector from a dot product of a unit orientation vector and the relative mean EEG vector.