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ccnbook-executive_summary [2018/06/03 10:04]
n.arakawa created
ccnbook-executive_summary [2018/06/03 10:14] (current)
n.arakawa
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 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). ​ 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: Here are points:
-The executive function requires controlling (i.e., keeping & releasing) states. +  * The executive function requires controlling (i.e., keeping & releasing) states. 
-The states are held in PFC. +  ​* ​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]]). +  ​* ​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 modelconformable to the last figure in [[ccnbook-motor_summary|the Motor nutshell]], is found in O’Reilly & Frank’s paper+Figure 1 is from Figure 5 in O’Reilly & Frank’s paper slightly modified ​explaining the model conformable to the last figure in [[ccnbook-motor_summary|the Motor nutshell]]. 
-|  {{}}  | +|  {{ccnexecutivenutshell1.png}}  | 
-|  **Figure ​5** (from [[CCNBook]]) ​ | +|  **Figure ​1**  | 
-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. +Here, BG is controlling gates for states in PFC, while it was for controlling in general in the Motor chapter. ​ Besides the gating, BG also controls output (Figure 10.11). 
-Besides the gating, BG also controls output (Figure 10.11). +|  {{https://​grey.colorado.edu/​mediawiki/​sites/​CompCogNeuro/​images/​c/​cd/​fig_pbwm_architecture_mnt_out.png}} ​ | 
- +|  **Figure 10.11** (from [[https://​grey.colorado.edu/​CompCogNeuro/​index.php/​File:​fig_pbwm_architecture_mnt_out.png|CCNBook]]) ​ |
-|  **Figure 10.11** (from [[CCNBook]]) ​ |+
 For a most abstract level of understanding,​ these figures will suffice. 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). The chapter notes that there is a hierarchy of control in the frontal cortex (Figure 10.16).
- +|  {{https://​grey.colorado.edu/​mediawiki/​sites/​CompCogNeuro/​images/​thumb/​b/​b7/​bgpfc_hier_Probs.png/​320px-bgpfc_hier_Probs.png}} ​ | 
-|  **Figure 10.16** (from [[CCNBook]]) ​ | +|  **Figure 10.16** (from [[https://​grey.colorado.edu/​CompCogNeuro/​index.php/​File:​bgpfc_hier_Probs.png|CCNBook]]) ​ |