Figure 5. A model of the neural circuitry underlying thermostatic learning and memory. The AFD and AWC neurons sense temperature information. Under certain conditions, the ASI chemosensory neurons are also involved in thermotaxis. The AIY interneuron receives information from the sensory neurons and sends information to the AIZ interneuron. Signals from both interneurons are then transmitted to the RIA interneurons. Solid lines represent synaptic connections while dashed arrows represent secretory communications.