[46] Li, P., Li, Z., Halang, W.A. and Chen, G. (2007), Li-Yorke chaos in a spatiotemporal chaotic system, Chaos, Solitons and Fractals , 33 , 335-341. [47] Akin E. and Kolyada, S. (2003), Li-Yorke sensitivity, Nonlinearity , 16 , 1421-1433. [48] Kloeden, P. and Li, Z. (2006), Li-Yorke chaos in higher dimensions: a review, Journal of Difference Equations and Applications , 12 , 247-269. [49] Shi Y. and Chen, G. (2004), Chaos of discrete dynamical systems in complete metric spaces, Chaos, Solitons & Fractals , 22 , 555-571. [50] Shi Y. and Chen, G. (2005), Discrete chaos in Banach spaces, Science in China, Ser. A: Mathe- matics , 48 , 222-238. [51] Izhikevich, E.M. (2007), Dynamical Systems in Neuroscience: The Geometry of Excitability and Bursting , The MIT Press: Cambridge. [52] Pasemann, F., Hild, M. and Zahedi, K. (2003), SO(2)-networks as neural oscillators, Computational Methods in Neural Modeling Lecture Notes in Computer Science , 2686 , 144-151. [53] Watanabe, M., Aihara, K. and Kondo, S. (1997), Self-organization dynamics in chaotic neural networks, Control and Chaos, Mathematical Modelling , 8 , 320-333. [54] Gonzáles-Miranda, J.M. (2004), Synchronization and Control of Chaos , Imperial College Press: London. [55] Hunt, B.R., Ott, E. and Yorke, J.A. (1997), Differentiable generalized synchronization of chaos, Phys. Rev. E , 55 , 4029-4034. [56] Kapitaniak, T. (1994), Synchronization of chaos using continuous control, Phys. Rev. E , 50 , 1642- 1644. [57] Kocarev, L. and Parlitz, U. (1996), Generalized synchronization, predictability, and equivalence of unidirectionally coupled dynamical systems, Phys. Rev. Lett. , 76 , 1816-1819. [58] Macau, E.E.N., Grebogi, C. and Lai, Y.-C. (2002), Active synchronization in nonhyperbolic hy- perchaotic systems, Phys. Rev. E , 65 , 027202. [59] Pecora, L.M. and Carroll, T.L. (1990), Synchronization in chaotic systems, Phys. Rev. Lett. , 64 , 821-825. [60] Rulkov, N.F., Sushchik, M.M., Tsimring, L.S. and Abarbanel, H.D.I. (1995), Generalized synchro- nization of chaos in directionally coupled chaotic systems, Phys. Rev. E , 51 , 980-994. 20