The effects of harmonious personality on cooperation in the context of conflicts of benefits

NIRScout (NIRx Medizintechnik GmbH, Germany) was used to record the changes in the concentrations of oxygenated hemoglobin (Hbo) and deoxyhemoglobin (Hbr) in the brain of participants during experimental tasks using two wavelengths (760nm and 850nm) in continuous wave form. The sampling rate of the device is 7.8125Hz. According to the international standard 10-20 system, the NIRS cap is used to place the optical probe on the subject's head. Each participant's optical probe consists of 8 emitters and 12 detectors, forming a total of 26 channels (Figure 2). The distance between adjacent light source emitters and light source detectors is 3cm.