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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]
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.
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 ...
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.”
Physiologist Ancel Keys was the lead investigator of the Minnesota Starvation Experiment. He was directly responsible for the X-ray analysis and administrative work and the general supervision of the activities in the Laboratory of Physiological Hygiene which he had founded at the University of Minnesota in 1940 after leaving positions at Harvard's Fatigue Laboratory and the Mayo Clinic.
For Bruch, the psychological experience of hunger "is not innate, but something that contains important elements of learning." [ 9 ] She believed that this learning takes place during early child-mother interaction, and that disordered hunger awareness resulted from the "absence or paucity of appropriate and confirming responses to signals ...
The ventromedial nucleus of the hypothalamus (VMN, VMH or ventromedial hypothalamus) is a nucleus of the hypothalamus.In 2007, Kurrasch et al. found that the ventromedial hypothalamus is a distinct morphological nucleus involved in terminating hunger, fear, thermoregulation, and sexual activity. [1]
Nutrition psychology seeks to understand the relationship between nutritional behavior, mental health and general well-being. [2] It is a sub-field of psychology and more specifically of health psychology , and may be applied to numerous related fields, including psychology , dietetics , nutrition , and marketing .