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Related Concept Videos

Regulation of Food Intake01:30

Regulation of Food Intake

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Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
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Primary Motives: Hunger and Thirst01:25

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Hunger and thirst are fundamental physiological drives crucial for maintaining homeostasis and ensuring the survival of both humans and animals. These drives are regulated through complex interactions between the brain, hormones, and sensory receptors.
Hunger arises when the brain detects changes in the body's nutrient levels, including glucose, lipids, amino acids, and hormones such as ghrelin and leptin. The hypothalamus plays a central role in hunger regulation. The lateral hypothalamus...
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Metabolic States of the Body: Fasting and Starvation01:24

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During the initial hours of fasting, the body uses up its glycogen stores as an energy source. Once these glycogen reserves are depleted, the body begins breaking down stored triglycerides and structural proteins. During this stage, glycerol becomes a key substrate for gluconeogenesis, while free fatty acids undergo beta-oxidation to provide energy for tissues, such as skeletal muscle. In the fasting state, the body spares protein breakdown as much as possible to conserve muscle and structural...
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Functional Brain Systems: Limbic System01:15

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The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
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Neural Regulation01:37

Neural Regulation

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Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
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Hormonal Regulation01:40

Hormonal Regulation

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Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.
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Related Experiment Video

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Control of Eating Behavior Using a Novel Feedback System
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[Hunger-driven modulation in brain functions].

Yukinori Hirano1, Minoru Saitoe

  • 1SK Project, Medical Innovation Center, Kyoto University Graduate School of Medicine.

Brain and Nerve = Shinkei Kenkyu No Shinpo
|December 28, 2013
PubMed
Summary
This summary is machine-generated.

Mild fasting enhances long-term memory (LTM) formation in fruit flies by altering brain function. This study explores the molecular mechanisms behind hunger-driven memory, revealing fasting

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Area of Science:

  • Neuroscience and Metabolism
  • Animal Physiology

Context:

  • Organisms require nutrition for survival, but food availability fluctuates.
  • Nutritional status influences internal activities and behavior in animals.
  • Hormones like insulin, glucagon, leptin, and ghrelin regulate responses to fasting.

Purpose:

  • To review the effects of fasting on animal metabolism and brain function.
  • To introduce a novel finding on how hunger facilitates long-term memory (LTM) formation in Drosophila.
  • To discuss the biological significance of fasting-induced LTM.

Summary:

  • Fasting alters animal metabolism and behavior, mediated by hormones, to maintain blood sugar and motivate feeding.
  • A recent study in Drosophila revealed that hunger, induced by mild fasting, facilitates long-term memory (LTM) formation.
  • The molecular mechanisms underlying hunger-driven LTM in fruit flies were investigated.

Impact:

  • Provides insights into the neurobiological effects of fasting.
  • Identifies a novel role for hunger in memory formation.
  • Highlights the biological significance of fasting in modulating cognitive functions like memory.