Pseudo brain wave generation system and brain wave measurement system

摘要

The challenge is to generate an electrical signal that is closer to the brain waves, reflecting the effects of the measurement conditions. The pseudo-electroencephalogram generation system (6) generates an electric signal imitating an electroencephalogram in the output unit (82) based on the reference signal received by the input unit (81). The pseudo-electroencephalogram generation system (6) is a contact resistance circuit (871,) between the input unit (81) and the output unit (82) and having a resistance value corresponding to the contact resistance between the electrode unit (11) and the human body. 872) is included. In the pseudo brain wave generation system (6), the impedance seen from the contact resistance circuit (871,872) is higher than the impedance seen from the input unit (81) between the input unit (81) and the contact resistance circuit (871,872). Also includes a small impedance conversion circuit (851,852).