Presumption method of psychological pressure state using biological sensors

In medical institutions, communication between a doctor and a patient or between persons has been regarded as more important. However, it may be difficult for infants, elderly persons or disabled persons to communicate directly their intentions. In this case, an unexpected trouble may occur by the discrepancy of mutual understandings. Therefore, it is thought that it is necessary to prevent discrepancies by visualizing the state of users and informing. On the other hand, biometric information is used as a method for presuming the state of users. In this paper, we propose the presumption method of psychological pressure state by using brain hemodynamic based on hemoglobin values obtained by Near-InfraRed Spectroscopy (NIRS) and clarify its effectiveness.