Figure 9. Proposed circuitry for exercise hyperpnoea .

Left panel illustrates, in schematic form, the key circuits that may underpin the networks and structures involved in exercise hyperpnoea. dlPAG, dorsal lateral periaqueductal grey; DMH, dorsal medial hypothalamus; lPAG, lateral periaqueductal grey; PFC, prefrontal cortex; STN, subthalamic nucleus. Modified from Dampney et al. (2013) with permission. New proposed circuits in red. In particular, this network may underpin the ‘central governor hypothesis’ proposed by Noakes (Rauch et al. 2013). Running man image with permission from Bryan Christie Design.