Structures and Connections of the Papez Circuit

The Papez circuit is a network within the limbic system of the brain that is responsible for emotional expression. The main image depicts the primary structures of the circuit within the context of the rest of the brain, color-coded for clarity. In the inset to the right, the structures have been isolated and the direction of the pathway highlighted using arrows. The arrows are color-coded to distinguish between the pathway as it is traditionally understood (light purple), while highlighting new neural connections that been discovered recently (lime).