|Control of sensorimotor function by dopaminergic nigrostriatal neurons: influence on eating and drinking.|
|PMID: 3010199 Owner: NLM Status: MEDLINE|
|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.|
|N M White|
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|Type: Journal Article; Research Support, Non-U.S. Gov't; Review|
|Title: Neuroscience and biobehavioral reviews Volume: 10 ISSN: 0149-7634 ISO Abbreviation: Neurosci Biobehav Rev Publication Date: 1986|
|Created Date: 1986-06-09 Completed Date: 1986-06-09 Revised Date: 2006-11-15|
Medline Journal Info:
|Nlm Unique ID: 7806090 Medline TA: Neurosci Biobehav Rev Country: UNITED STATES|
|Languages: eng Pagination: 15-36 Citation Subset: IM|
|APA/MLA Format Download EndNote Download BibTex|
Blood Glucose / physiology
Corpus Striatum / physiology*
Dopamine / physiology*
Drinking Behavior / physiology*
Feeding Behavior / physiology*
Hydroxydopamines / pharmacology
Hypothalamic Area, Lateral / physiology
Insulin / pharmacology
Motor Activity / physiology
Neural Pathways / physiology
Receptors, Dopamine / physiology
Satiety Response / physiology
Sensation / physiology
Substantia Nigra / physiology*
Taste / physiology
|0/Blood Glucose; 0/Hydroxydopamines; 0/Receptors, Dopamine; 11061-68-0/Insulin; 1199-18-4/Oxidopamine|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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