Comparison of improving effect of concentration in biofeedback of visual and auditory

The Mental condition of humans affects sports and intellectual works. In particular, better results can be obtained when high concentration condition is achieved. One of the approaches of concentration improvement is Bio Feedback (BF). BF is a method which enables voluntary control of mind and body by feeding back biological information to the sense organs of humans. At this time, the effect might be different by presentation methods. In this study, the improving effect of the concentration was compared in BF of visual and auditory. Specifically, the effects of BF were evaluated by following two things : (1) Improvement of concentration before and after BF, and (2) Transition of mean concentration by the continuous BF. In experiment (1), 12 subjects were divided into groups of six persons according to the presentation methods. Then, mean concentrations of each subject at BF time and rest time were compared. As a result, the concentration of 5 out of 6 subjects in the visual presentation method was improved. In the auditory presentation method, the concentration of all the 6 subjects was improved. In experiment (2), 3 subjects undertook the same experiment as experiment (1) but continued for 10 days. Consequently, various problems became clear in both presentation methods. From the above results, it is evident that the effect of BF does not depend on the characteristics of the sensory organs. Therefore, presentation method is important in the design of BF equipment.