The frontal lobes and executive function

From the viewpoint of neural network modelling via nonlinear dynamical systems, it is useful to break down the overall executive function (EF) into smaller components that repeatedly occur in different tasks and in different combinations. The tasks whose models are described suggest three generic components that commonly occur, all related to aspects of pre-frontal function: 1) establishing links between working memory representations which could represent sensory stimuli and potential motor actions; 2) creating, learning, and deciding among high-level schemata that embody repeatable, but often flexible action sequences; and 3) incorporating affective evaluations of sensory events or potential motor plans and using these evaluations to guide actions. The network theory developed describes how the components of EF could arise from frontal system neuroanatomy