Food aversions: taste reactivity responses elicited by lithium-paired food

The taste reactivity (TR) test was employed to measure the orofacial, somatic and consummatory CRs elicited by a lithium-paired food. Hungry rats were presented chocolate chips followed immediately by an injection of lithium chloride (CS+ group) or saline (CSc group). During the TR test, the rats' behavioral responses to the chocolate chips were videorecorded. The results demonstrated that rats in the CS+ group did not consume the lithium-paired food, but demonstrated the aversive TR response pattern of chain rubbing, paw treading, and gaping.