Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. === CCNBook Executive-PBWM in a Nutshell === This article tries to summarize the PBWM (Prefrontal cortex Basal ganglia Working Memory) model in [[https://grey.colorado.edu/CompCogNeuro/index.php/CCNBook/Executive|the Executive chapter]] of [[https://grey.colorado.edu/CompCogNeuro/index.php/CCNBook/Main|the CCNBook]]. The PBWM model is further explained in O’Reilly & Frank’s paper: [[http://psych.colorado.edu/~oreilly/papers/OReillyFrank06_pbwm.pdf|Making Working Memory Work: A Computational Model of Learning in the Prefrontal Cortex and Basal Ganglia]], Neural Comput., 18(2) (2006). Here are points: The executive function requires controlling (i.e., keeping & releasing) states. The states are held in PFC. The control is carried out with the reinforcement learning mechanism described in [[https://grey.colorado.edu/CompCogNeuro/index.php/CCNBook/Motor|the Motor chapter]] (cf. [[ccnbook-motor_summary|the nutshell]]). A figure explaining the model, conformable to the last figure in [[ccnbook-motor_summary|the Motor nutshell]], is found in O’Reilly & Frank’s paper. | {{}} | | **Figure 5** (from [[CCNBook]]) | Here, BG is controlling gates for states in PFC, while it was for controlling in general in the Motor chapter. Posterior Cortex in the figure may mean a cortical region ‘posterior’ to PFC. Besides the gating, BG also controls output (Figure 10.11). | **Figure 10.11** (from [[CCNBook]]) | For a most abstract level of understanding, these figures will suffice. The chapter notes that there is a hierarchy of control in the frontal cortex (Figure 10.16). | **Figure 10.16** (from [[CCNBook]]) | ccnbook-executive_summary.1527987865.txt.gz Last modified: 2018/06/03 10:04by n.arakawa