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Jaw, Tongue And Hyoid Movement — A Question Of Synchrony? Discussion Paper

A. Thexton
Published 1984 · Medicine

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Studies of human oral function have generally concentrated upon the movements (or the muscle activity producing the movements) of the jaw in &hewing or alternatively of the tongue in swallowing. This concentration upon movements of different structurd§ i different activities has meant that some important aspects of human feeding have nidt received appropriate attention. First, it is obvious that feeding can proceed without chewitig atd al§o clear that the tongue transports food through the mouth in the cycles of' moveffetit ptior to swallowing. Secondly, since the different oral behaviours of feeding are the result of Chatges in the interrelated movements of the jaw, hyoid, tongue, etc., the differences in behavidur Ate not easily understood simply by investigating the movements of individtial anatthmical structures in isolation. The result is that even the basic interrelationships between the movements of the oral structures during feeding in man are poorly understood, despite the pioneering radiological studies of Ardran and colleagues (Ardran & kemlp 1960, 1970, 1975, Ardran et al. 1958a,b). An additional reason for the paucity of hard infdrlnatioti i§ that currently the only available technique for simultaneously recording jaw, tongue and food movement intraorally is cineradiography; studies on healthy human volunteers, as distitict from diagnostically related investigations, have therefore had distinct ethical limitations. There is consequently an obligation to use animal models to obtain the basic understanding of the mechanisms of oral function before detailed studies in mani can be embarked upon. Although a considerable amount of background work on oral functiont hag already been carried out on a variety of animals, most studies have still concentrated upon quite limited aspects of oral activity, although to a lesser extent than human studies. The animal studies have been diverse, using for example, the mudskipper (Sponder & Lauder 1981), the salamander (Thexton et al. 1977), the lizard (Throckmorton 1980, Smith 1982, 1984), the bat (Kallen & Gans 1972), the opossum (Crompton et al. 1977), the rat (Hiiemae & Ardran 1968, Weijs & Dantuma 1975), the rabbit (Ardran et al. 1958b, Weijs & Dantuma 1981), the pig (Herring & Scapino 1973, Herring 1976), the cat (Hiiemae et al. 1978, 1981, Thexton 1981, Thexton et al. 1980, 1982) and the monkey (Luschei & Goodwin 1974, Byrd et al. 1978, Franks et al. 1981). Although the details of the oral mtisculoskeletal system may vary considerably between the animals studied and may also differ from niafi, the essential functional mechanisms remain the same. Consequently, many of the movefients ate also broadly similar in nature. Two basic questions that can be answered from afiimal studies and which will be reviewed in this paper are: (1) In what way do the different anatomiical structures act together in the rhythmic movements of feeding? (2) Is there such a thing as a 'basic' pattern of neuromuscular coordination underlying the apparently different oral behaviours involved in dealing with liquid and solid foods? Over the last ten years, in collaboration with investigators at the universities of-Illinois and Harvard (see Acknowledgments), several studies of the overall pattern of oral behaviour have been initiated using different animal models. However, only the study of the cat is near completion. The cat has particular advantages as an experimental model since its jaw has a
This paper references
Physiology of feeding in miniature pigs
S. Herring (1973)
The dynamics of mastication in pigs.
S. Herring (1976)
The organisation of the oro-facial muscles in relation to breathing and feeding.
Food consistency and bite size as regulators of jaw movement during feeding in the cat.
A. Thexton (1980)
A method for a computer-based analysis of jaw and hyoid movement.
J. Mcgarrick (1981)
Functional Anatomy of the Masticatory Apparatus in the Rabbit (Oryctolagus Cuniculus L.)
W. Weijs (1980)
Electromyography and mechanics of mastication in the albino rat
W. Weijs (1975)
The movement of the cat hyoid during feeding.
K. Hiiemae (1981)
Mastication in the little brown bat, Myotis lucifugus
F. Kallen (1972)
The activity of the jaw and hyoid musculature in the Virginian opossum, Didelphis virginiana
A. Crompton (1977)
Some Important Factors in the Assessment of Oropharyngeal Function
G. Ardran (1970)
The chewing cycle in the herbivorous lizard Uromastix aegyptius (Agamidae).
G. Throckmorton (1980)
Tongue function in the salamander Bolitoglossa occident alis.
A. Thexton (1977)
An electromyographic study of the function of the jaw adducting muscles in Varanus exanthematicus (varanidae)
K. K. Smith (1982)
Human and Macaque Mastication: A Quantitative Study
K. Byrd (1978)
Quantitative assay of electromyograms during mastication in domestic cats (Felis catus)
G. Gorniak (1980)
Patterns of mandibular movement and jaw muscle activity during mastication in the monkey.
E. Luschei (1974)
A Cineradiographic study of breast feeding.
G. Ardran (1958)
Oral reflexes elicited by mechanical stimulation of palatal mucosa in the cat.
A. Thexton (1973)
Hyo-mandibular relationships during feeding in the cat.
A. Thexton (1982)

This paper is referenced by
Drinking in Mammals: Functional Morphology, Orosensory Modulation and Motor Control
H. Zeigler (1991)
Feeding in Mammals: Comparative, Experimental, and Evolutionary Insights on Form and Function
S. Williams (2019)
XROMM and diceCT reveal a hydraulic mechanism of tongue base retraction in swallowing
Courtney P Orsbon (2020)
Motor and Premotor Mechanisms of Licking
J. Travers (1997)
Electromyographic analysis of the sternohyoid muscle and anterior belly of the digastric muscle in head and tongue movements.
F. Berzin (1995)
Muscimol infusions in the brain stem reticular formation reversibly block ingestion in the awake rat.
Z. Chen (2001)
Physiology of the Oral Cavity
J. Travers (2010)
The evolution of the mammalian pharynx
K. K. Smith (1992)
The electromyographic activities of jaw and hyoid musculature in different ingestive behaviours in the cat.
A. Thexton (1994)
David Leib (2016)
Fine coordination of perioral muscle activity and jaw movement during food bolus formation and swallowing
Tongue movement of the cat during lapping.
A. Thexton (1988)
Correlations between functional and occlusal tooth-surface areas and food texture during natural chewing sequences in humans.
P. Bourdiol (2000)
Identification of rat brainstem multisynaptic connections to the oral motor nuclei using pseudorabies virus: I. Masticatory muscle motor systems
Richard A Fay (1997)
Evolution of muscle activity patterns driving motions of the jaw and hyoid during chewing in Gnathostomes.
N. Konow (2011)
Chewing efficiency and occlusal functional morphology in modern humans.
Myra F Laird (2016)
Internal kinematics of the tongue in relation to muscle activity and jaw movement in the pig.
Z. Liu (2009)
Pharmacologically induced changes in the latency of digastric reflexes in 1-7 day old rabbits.
A. Thexton (1988)
Tongue movement in the cat during the intake of solid food.
A. Thexton (1989)
Coordination of jaw and extrinsic tongue muscle activity during rhythmic jaw movements in anesthetized rabbits
S. Ariyasinghe (2004)
Fine structure of the dorsal epithelium of the tongue of the freshwater turtle, Geoclemys reevesii (Chelonia, Emydinae)
S. Iwasaki (1992)
The Effect of Food Consistency upon Jaw Movement in the Macaque: A Cineradiographic Study
A. Thexton (1997)
Natural bites, food consistency and feeding behaviour in man.
K. Hiiemae (1996)
Transition from suckling to drinking at weaning: a kinematic and electromyographic study in miniature pigs.
A. Thexton (1998)
Effect of sensory input from the tongue on jaw movement in normal feeding in the opossum.
A. Thexton (1989)
Relationship Between Jaw Movement and Food Breakdown in Human Mastication
P. Lucas (1986)
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