NIR brain imaging means near-infrared optical brain imaging. It is an examination that assesses brain activity by measuring changes in oxygen levels in the human cerebral cortex. During the examination, the subject wears a sensor-mounted strap on the forehead that includes an infrared light source and a detector. The sensor detects oxygen levels in the prefrontal cortex, providing values of oxyhemoglobin and deoxyhemoglobin in real time. As the subject performs different tasks, the system provides continuous and real-time oxygen changes, according to which the user is given an indicator of cognitive function assessment. Currently, this technology is used in two main areas. In the field of scientific research, it is applied in psychology, cognitive neuroscience, and sports human science research; in the field of medical treatment, it is applied in psychiatric and brain function diseases, infants and children, brain regulation monitoring and assessment, and brain function rehabilitation.