Corticosterone acts directly at the amygdala to alter spinal neuronal activity in response to colorectal distension.
Qin C, Greenwood-Van Meerveld B, Myers DA, Foreman RD. Corticosterone acts directly at the amygdala to alter spinal neuronal activity in response to colorectal distension. J Neurophysiol. 2003 Mar; 89(3):1343-52.