| Control of sensorimotor function by dopaminergic nigrostriatal neurons: influence on eating and drinking. | |
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MedLine Citation:
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PMID: 3010199 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The literature on the effects of lesions of the lateral hypothalamic area (LHA) on eating and drinking is reviewed in an effort to understand the function of the neural substrate destroyed. The data suggest that damage to the dopaminergic nigrostriatal neurons that course through the LHA results in a decrease in sensorimotor facilitation; that is, an increase in the threshold for responding to stimuli that elicit orientation, approach and consumption. This increase results in decreased consumption of food and water. Evidence is also reviewed suggesting the possibility that striatal dopaminergic activity may mediate a negative feedback signal related to blood glucose level that influences responsiveness to food, and therefore eating. There is no evidence that the nigrostriatal system mediates a similar signal related to water balance and drinking. A second deficit associated with LHA lesions, caused by damage to the pallidofugal neurons that descend through this area, is a dysfunction of motor control of the head and mouth. This results in an increase in the effort required to consume food and water, also leading to decreased consumption. These two behavioral factors: an increased threshold for responding to the sensory properties of food and water and an increase in the effort required to eat and drink are used to explain the symptoms making up the lateral hypothalamic syndrome without postulating changes in physiological regulatory (set point) mechanisms. |
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Authors:
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N M White |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Review |
Journal Detail:
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Title: Neuroscience and biobehavioral reviews Volume: 10 ISSN: 0149-7634 ISO Abbreviation: Neurosci Biobehav Rev Publication Date: 1986 |
Date Detail:
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Created Date: 1986-06-09 Completed Date: 1986-06-09 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7806090 Medline TA: Neurosci Biobehav Rev Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 15-36 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Blood Glucose / physiology Body Weight Brain Mapping Corpus Striatum / physiology* Dopamine / physiology* Drinking Behavior / physiology* Electric Stimulation Feedback Feeding Behavior / physiology* Homeostasis Hydroxydopamines / pharmacology Hypothalamic Area, Lateral / physiology Insulin / pharmacology Male Motor Activity / physiology Neural Pathways / physiology Oxidopamine Rats Receptors, Dopamine / physiology Satiety Response / physiology Sensation / physiology Substantia Nigra / physiology* Synaptic Transmission Taste / physiology |
| Chemical | |
Reg. No./Substance:
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0/Blood Glucose; 0/Hydroxydopamines; 0/Receptors, Dopamine; 11061-68-0/Insulin; 1199-18-4/Oxidopamine |
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