“…In our previous studies, we have used gamma-process model [21], delayed feedforward network model [22], complex network mapping [23] as well as some nonlinear analysis methods [19], such as, Lyapunov exponent, correlation dimension and LempelZiv complexity, to characterize the property of electric signals recorded in the neurons in spinal cord evoked by manual acupuncture. These investigations have not only revealed reliable information about the chaotic and random properties of acupuncture signals, but also offered a deep insight into neural processing underlying manual acupuncture.…”