A brief list of possible references:
Deep learning. Yann LeCun, Yoshua Bengio & Geoffrey Hinton. Nature, 2015
Neural networks and physical systems with emergent collective computational abilities. JJ Hopfield. PNAS, 1982
Dynamic models of large-scale brain activity. Michael Breakspear. Nature Neuroscience, 2017
Chapter 1, Murray, J. D. Mathematical biology: I. An introduction. Springer-Verlag, 2007.
Chapter 2, Murray, J. D. Mathematical biology II: spatial models and biomedical applications. Springer-Verlag, 2007.
Reaction-Diffusion Model as a Framework for Understanding Biological Pattern Formation. Shigeru Kondo, Takashi Miura. Science, 2010