Analysis for Characteristics of Electroencephalogram (EEG) and Influence of Environmental Factors According to Emotional Changes

Neurofeedback is a kind of bio feedback that induces the brain wave pattern or the regional cerebral blood flow (rCBF). For the last thirty years, this technique was clinically applied in order to increase the effect of the psychotherapy. However, most of the studies which were carried out until now were just simple ones that analyze the patterns of the brain waves according to specific stimulations. It seems that the studies related to the environmental factors for the specific time have not been carried out yet. There was a problem caused by the difference according to the surrounding environment when a specific type of stimulation is applied to a specific patient. Such a problem was an obstacle in the clinical utilization of this technique. In order to solve such a problem, this study has analyzed the characteristics of the brain waves along with the changes of the surrounding environment for the time when the stimulation is applied to the patient. Based on the results, the trend for inducing emotional changes in the environmental factors was analyzed. Also, a way to utilize brain waves for stable neurofeedback treatments, and related training techniques and health-care tools, which were not influenced by the environmental changes, was suggested.