The Simulation of Chemical Dynamics about the Influence of Noise on the Detection of Weak Hormonal Signal in a Cell System

Abstract: By constructing a mesoscopic stochastic model of a cell system， we have investigated the influence of internal and external noise on the detection of weak hormonal signal using computer simulation method. The results showed that the increases of the internal noise intensity played a negative role in the detection of weak hormonal signal with the existence of external noise; and in the presence of internal noise， the ability of the detection of weak signal was the best at optimal external noise intensity. The results showed that there always existed internal signal stochastic resonance in the range of cell volumes of mostly higher flora and fauna， and the cell system had the strongest ability to detect weak signals at an optimal external noise intensity (2.0-3.0). The biological system is likely to have learned to self-regulate their system volume to an optimal one， thereby make use of the positive effects of external noise. Our findings might have implications for the mechanism of weak signal detecting process in living systems.

CSTR: 32200.14.cjcb.2017.09.0002