Brain Activity Can Be Found Out by Pulse -- MEDICA - World Forum for Medicine

A person under examination is seated in front of a PC, a diminutive clip-type sensor is put on the finger. Several minutes later the person gets information on functional state of the organism, evaluation of exercise performance and recommendations on the level of physical and mental workload. This is how the "Pulsar” hard- and software complex should operate, hope specialists of the Modern University for the Humanities in Moscow.

The device is based on the method of variation pulsometry, which has been used for a long time by physiologists and physicians for evaluation of the state of organism. Two parameters of cardiac beats are measured - pulse rate and its changeability.

The program provides each person under examination with a conclusion, which describes the functional capabilities level, physical and mental workload tolerance, probability of overstrain and fatigue development, necessary regimen and preventive measures and, finally, the possibility to increase load.

The device can also help to obtain information on the state of nonspecific activation system of brain. Physiologists examined a group of students, having recorded their pulse readings twice: in the state of calm wakefulness and when calculating a number of peaks on the screen.

It turned out that almost with half of the students the cardiac rate had changed, it either slowed down or accelerated. A similar picture can be observed when recording electroencephalogram during mental workload, so the scientists have assumed that cardiac rate changes during examinations on the "Pulsar” device also reflect switching on of the brain activation system.; Source: Informnauka (Informscience) Agency