Host: Japan Society of Kansei Engineering
Name : The 8th International Symposium on Affective Science and Engineering
Number : 8
Location : Online Academic Symposium
Date : March 27, 2022
Fluctuations in nonlinear systems can enhance the synchronization with weak input signals. Chaotic resonance (CR) is one of such phenomena, caused by a system-intrinsic chaotic fluctuation. CR is observed in systems with chaos-chaos intermittency (CCI), where a chaotic orbit appears between separate regions. Based on the characteristics of CR, we previously proposed a novel method for controlling the chaotic state to an appropriate CR state by adopting a feedback signal from the system itself. This method is called the reduced-region-of-orbit (RRO) feedback method. The RRO feedback method was applied to discrete and continuous time chaotic systems, and its versatility was confirmed. Moreover, we have applied this method in an intervention to facilitate the transition from the disturbed circadian rhythm underlying the bipolar disorder to healthy periodic activity, based on a neural system model of the frontal and sensory cortical areas proposed by Hadaeghi et al. In this study, we further examined the responsiveness of CCI to a weak periodic signal by extending the parameter regions of the system. As a result, we confirmed the effectiveness of the RRO feedback method for stabilizing the neural activity observed in the bipolar-disorder model over a wide range of parameters.
