Neural mass models. (a) A diagram of the model of a cortical unit employed by Grimbert and Faugeras  and a sample trace showing an oscillation similar to an EEG alpha rhythm. (b) Representation of a Wiener cascade used to model a population of nerve cells. The Wiener cascade consists of a linear dynamical module and a static nonlinear one. (c) Schematic representation of the model described by Freeman  and sample traces showing chaotic behavior of the impulse responses (impulse input—arrows).
Article of the Year Award: Outstanding research contributions of 2020, as selected by our Chief Editors. Read the winning articles.