Effects of noise and inhomogeneous attractors in biochemical systems

Biochemical systems capable of sustained oscillations and deterministic chaos were investigated, and effects of short-correlated noise on oscillations and chaos are reviewed. It is emphasized that fluctuations can be amplified drastically under certain circumstances and, therefore, they can be easily confused with truly chaotic behaviour. Biochemical systems exhibit typically inhomogeneous attractors. Inhomogeneity can be quantified by introducing local densities. The implication of inhomogeneity for time-series analysis is demonstrated by an example of experimental data from a chemical system.