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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. Satiety occurs between 5 and 20 minutes after eating. [1] There are several theories about how the feeling of hunger arises. [2]
Hunger is the result of a fall in blood glucose level or depriving cells of the ability to metabolize fatty acids—glucoprivation and lipoprivation, respectively, stimulate eating. [13] Detectors in the brain are only sensitive to glucoprivation; detectors in the liver are sensitive to both glucoprivation and lipoprivation outside the blood ...
Acute hunger is typically used to denote famine like hunger, though the phrase lacks a widely accepted formal definition. In the context of hunger relief, people experiencing 'acute hunger' may also suffer from 'chronic hunger'. The word is used mainly to denote severity, not long-term duration. [7] [8] [5]
Primary drives are innate drives (e.g., thirst, hunger, and sex), whereas secondary drives are learned by conditioning (e.g., money). Doris Kraeling and Byron Campbell conducted experiments to determine if “reduction would be more effective as a reinforcer if the initial drive were low than if the initial drive were high.”
One of the most significant developments in hunger research since the Cannon-Washburn experiment is the recognition of hunger's multifactorial nature. Modern studies have revealed a complex interplay of hormonal, neural, and metabolic factors that contribute to the sensation of hunger and the regulation of food intake.
Physiological psychology is a subdivision of behavioral neuroscience ... light exposure, noise, hunger, and overeating all result in an increase in wakefulness. On ...
The mind is responsible for phenomena like perception, thought, feeling, and action.. The mind is that which thinks, feels, perceives, imagines, remembers, and wills.It covers the totality of mental phenomena, including both conscious processes, through which an individual is aware of external and internal circumstances, and unconscious processes, which can influence an individual without ...
In humans, when calories are restricted because of war, famine, or diet, lost weight is typically regained quickly, including for obese patients. [2] In the Minnesota Starvation Experiment, after human subjects were fed a near-starvation diet for a period, losing 66% of their initial fat mass, and later allowed to eat freely, they reattained and even surpassed their original fat levels ...