Editing Classical conditioning (section)

===Conditioned hunger{{anchor|Conditioned hunger}}===
Signals that consistently precede food intake can become conditioned stimuli for a set of bodily responses that prepares the body for food and [[digestion]]. These reflexive responses include the secretion of [[Gastric acid|digestive juices]] into the stomach and the secretion of certain hormones into the blood stream, and they induce a state of hunger. An example of conditioned hunger is the "appetizer effect." Any signal that consistently precedes a meal, such as a clock indicating that it is time for dinner, can cause people to feel hungrier than before the signal. The [[lateral hypothalamus]] (LH) is involved in the initiation of eating. The [[nigrostriatal pathway]], which includes the [[substantia nigra]], the [[lateral hypothalamus]], and the [[basal ganglia]] have been shown to be involved in hunger motivation.{{Citation needed|date=July 2021}}