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Following satiation (meal termination), satiety is a feeling of fullness lasting until the next meal. [1] When food is present in the GI tract after a meal, satiety signals overrule hunger signals, but satiety slowly fades as hunger increases. The satiety center in animals is located in ventromedial nucleus of the hypothalamus. [2]
Economic satiation, where increasing the amount of a good reduces the worth of each individual unit of it; Predator satiation, an anti-predator adaptation involving high population densities of the prey; Semantic satiation, where repetition of a word or phrase causes it to temporarily lose meaning; Satiation therapy, a type of behavioral therapy
The term "snatiation", coined shortly thereafter in a humorous letter to the Journal of Medical Genetics by Judith G. Hall, is a portmanteau of the words sneeze and satiation. [2] Similar in nature to this condition is gustatory rhinitis, which involves rhinorrhea induced by certain foods, such as spicy foods. [3]
Foods with the most satiation per calorie are often: high in certain proteinase inhibitors that suppress appetite - e.g. potatoes [7] [8] high in protein (which takes longer to digest than other energy sources) - e.g. meat; low in glycemic index (in which the carbohydrates take longer to digest) - e.g. oats
Semantic satiation is a psychological phenomenon in which repetition causes a word or phrase to temporarily lose meaning for the listener, [1] who then perceives the speech as repeated meaningless sounds. Extended inspection or analysis (staring at the word or phrase for a long time) in place of repetition also produces the same effect.
Hunger is a sensation that motivates the consumption of food.The sensation of hunger typically manifests after only a few hours without eating and is generally considered to be unpleasant.
The economic principle of satiation [1] is the effect whereby the more of a good one possesses, the less one is willing to give up to get more of it. This effect is caused by diminishing marginal utility , the effect whereby the consumer gains less utility per unit of a product the more units consumed.
Likewise, food satiation reduces both the reinforcing effect of food and the probability of food-getting behaviors. Note that a motivating operation differs from a discriminative stimulus (Sd). A discriminative stimulus signals the availability of reinforcement, while a motivating operation changes the effectiveness of a reinforcer.