Chaos in Neural Oscillators Induced by Unidirectional Electrical Coupling M. A. García-Vellisca, R. Jaimes-Reátegui and A. N. Pisarchik Math. Model. Nat. Phenom., 12 4 (2017) 43-52 Published online: 03 July 2017 DOI: 10.1051/mmnp/201712405