ingestive behavior_SP12

Ingestive - Primary Reinforcers Survival Ingestive behavior Propagation Sleep biological rhythms Reproductive behavior Homeostasis Food and Energy

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Primary Reinforcers Survival Propagation Ingestive behavior Reproductive behavior
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Food and Energy Regulation Fluid Regulation Thermoregulation Monitors “need” Produces behaviors Homeostasis
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Maintenance of Homeostasis Detector Correctional System System Variable Set Point Primary Reinforcer Homeostatic Range Assess need Behavior Rosenzweig M.R. et al., Biological Psychology (2002)
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Humoral Response Maintenance of Homeostasis Hypothalamus Behavior Internal State Physiological Range Arousal Satiation
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Hormone Chapter 3 (module 3.2) A hormone is a chemical secreted by a gland or other cells that is transported to other organs by the blood where it alters activity. Endocrine glands are responsible for the production of hormones. Hormones are important for triggering long-lasting changes in multiple parts of the body. Hormones secreted by the brain can control the release of other hormones.
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1. Anterior pituitary- composed of glandular tissue 2. Posterior pituitary- composed of neural tissue and can be considered an extension of the hypothalamus Pituitary gland
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Steps to Hypothalamic Control of Pituitary Activity
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The pituitary regulates activity in other endocrine glands How does it “know” when to stop regulating? Negative feedback mechanism “Master gland”
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Example of Negative Feedback Controlling Thyroid Hormone
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Overview Thermoregulation Fluid regulation Food regulation Metabolism What starts a meal? What stops a meal? Neural mechanisms Eating disorders
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Thermoregulation Peripheral Temperature receptors: anterolateral pathway Central temperature receptors : preoptic area/anterior hypothalamus Warm and cold sensitive neurons
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Thermoregulation Response to Cold Response to heat TSH* Parasympathetic activity accelerated respiration, perspiration, dilation of cutaneous vessels TSH Sympathetic activity Shivering of muscles, metabolism of brown fat, constriction of cutaneous vessels Medial preoptic area *TSH (thyroid stimulating hormone)
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1. Osmotic thirst – a thirst resulting from eating salty foods. 2.
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This note was uploaded on 03/29/2012 for the course PSY 308 taught by Professor Jones during the Spring '08 term at University of Texas at Austin.

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Ingestive - Primary Reinforcers Survival Ingestive behavior Propagation Sleep biological rhythms Reproductive behavior Homeostasis Food and Energy

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