Biomaterial Database

Trigeminal sensorimotor mechanisms and ingestive behavior. 1984

H P Zeigler, and M F Jacquin, and M G Miller

Selective section of trigeminal orosensory nerves was carried out to assess the contributions of trigeminal orosensation to the control of food and water intake in the rat. Trigeminal orosensory deafferentation reduces a responsiveness to food and water, disrupts jaw-opening and tongue protrusion reflexes mediating eating and drinking, impairs dietary self-selection and reduces the level of long-term body weight regulation. The magnitude of the feeding behavior deficits is a joint function of the extent of the denervation and the sensory properties of the diet, and recovery takes place along a palatability gradient. Analysis of feeding and drinking patterns and of learned instrumental behaviors indicates that deafferentation reduces the probability of initiating a feeding or drinking bout and profoundly disrupts performance of operant responses reinforced with food or water. We conclude that the trigeminal system contributes to both the sensorimotor and motivational control of ingestive behavior. Its motivational contributions differ in both kind and magnitude from those of the gustatory system.

UI	MeSH Term	Description	Entries
D008410	Masticatory Muscles	Muscles arising in the zygomatic arch that close the jaw. Their nerve supply is masseteric from the mandibular division of the trigeminal nerve. (From Stedman, 25th ed)	Masticatory Muscle,Muscle, Masticatory,Muscles, Masticatory
D009042	Motivation	Those factors which cause an organism to behave or act in either a goal-seeking or satisfying manner. They may be influenced by physiological drives or by external stimuli.	Incentives,Disincentives,Expectations,Disincentive,Expectation,Incentive,Motivations
D001835	Body Weight	The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.	Body Weights,Weight, Body,Weights, Body
D002149	Energy Intake	Total number of calories taken in daily whether ingested or by parenteral routes.	Caloric Intake,Calorie Intake,Intake, Calorie,Intake, Energy
D004326	Drinking	The consumption of liquids.	Water Consumption,Water Intake,Drinkings
D004435	Eating	The consumption of edible substances.	Dietary Intake,Feed Intake,Food Intake,Macronutrient Intake,Micronutrient Intake,Nutrient Intake,Nutritional Intake,Ingestion,Dietary Intakes,Feed Intakes,Intake, Dietary,Intake, Feed,Intake, Food,Intake, Macronutrient,Intake, Micronutrient,Intake, Nutrient,Intake, Nutritional,Macronutrient Intakes,Micronutrient Intakes,Nutrient Intakes,Nutritional Intakes
D005518	Food Preferences	The selection of one food over another.	Food Selection,Food Preference,Food Selections,Preference, Food,Preferences, Food,Selection, Food,Selections, Food
D006815	Hunger	The desire for FOOD generated by a sensation arising from the lack of food in the STOMACH.
D000344	Afferent Pathways	Nerve structures through which impulses are conducted from a peripheral part toward a nerve center.	Afferent Pathway,Pathway, Afferent,Pathways, Afferent
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia