Application Of Stochastic Resonance In Human Balance Studies

There are various sensory stimulation caused in the human environment. We can take the stimulus needed to be indentified or disposed as a signal, and take the stimulus random changes and other types of stimulus as noise. Generally, we can consider that noise always interfere the sensory system. but noise don't always play a negative role to sense based on nonlinear view ,and under certain condition, it will play a positive role. Stochastic resonance means the phenomenon that noise can optimize the signal's transfer in the nonlinear system. The nonlinear system of characteristic of threshold is the classic system that bring the phenomenon. There is a obvious characteristic of threshold in the process of sensory change by the stimulus from outside world, so the existence of background noise can bring similar stochastic resonance phenomenon.Stochastic resonance show us that the noise and signal that is a periodic and small modulated are inputted together in the nonlinear bistable system, and the SNR will not decrease, on the contrary, it will increase, which strengthen the output signal.In this paper, we apply the technology of stochastic resonance combined with biomedicine to the daily life, according to the characteristic of stochastic resonance, which can strengthen the balance of the body,especially for the elderly and peculiar patients. At the same time, we proved its feasibility through making simulated experiment and practical body's testing, and stretch its applied field.