Arimura et al compared neural responses in the globus pallidus (GP), prefrontal cortex (PFC) and premotor cortex (PMC) during a task in which a visual cue instructed a goal and then another cue instructed which action to perform.  The GP reflected the visual cue and goal as soon as the cortex.  However, action selection occurred later in the GP than cortex.  Thus, the GP seems to play a more important role in goal determination than action selection.

About the Author

The Miller Lab uses experimental and theoretical approaches to study the neural basis of the high-level cognitive functions that underlie complex goal-directed behavior.