Effects of partial time delays on synchronization patterns in Izhikevich neuronal networks Mohadeseh Shafiei, Fatemeh Parastesh, Mahdi Jalili, Sajad Jafari, Matjaž Perc and Mitja Slavinec Eur. Phys. J. B, 92 2 (2019) 36 Published online: 13 February 2019 DOI: 10.1140/epjb/e2018-90638-x