Dear Colleagues, We are happy to share with you our work about the mechanisms of phase-amplitude cross frequency coupling (PAC) in models of biologically plausible neural networks. We think this work opens a new and valuable connection between theory of dynamical systems and the field of signal processing in neural networks and other biophysical systems. In particular, one of the proposed tools, the Time Locked Index (TLI), is suitable to efficiently quantify the harmonic content of experimental recordings. Hope you find this useful. Feedback is most welcome. "Bifurcation structure determines different phase-amplitude coupling patterns in the activity of biologically plausible neural networks" O M Velarde, E Urdapilleta, G Mato, and D Dellavale. NeuroImage https://doi.org/10.1016/j.neuroimage.2019.116031 The paper is freely available at: https://www.researchgate.net/publication/334582958_Bifurcation_structure_det... Source code for TLI computation:https://github.com/damian-dellavale/Time-Locked-Index With kind regards, Osvaldo Matías Velarde Departamento de Física Médica Instituto Balseiro - Centro Atómico Bariloche R8402AGP Bariloche, Río Negro, Argentinaosva_velarde@yahoo.com.arosva.m.velarde@gmail.com https://fisica.cab.cnea.gov.ar/fisicamedica/