MODIFICATION OF CORTICALLY EVOKED RHYTHMIC JAW MOVEMENTS BY REFLEX DEGLUTITION IN RABBITS
نویسندگان
چکیده
منابع مشابه
Behavior of jaw muscle spindle afferents during cortically induced rhythmic jaw movements in the anesthetized rabbit.
The regulation by muscle spindles of jaw-closing muscle activity during mastication was evaluated in anesthetized rabbits. Simultaneous records were made of the discharges of muscle spindle units in the mesencephalic trigeminal nucleus, masseter and digastric muscle activity (electromyogram [EMG]), and jaw-movement parameters during cortically induced rhythmic jaw movements. One of three test s...
متن کاملRegulation of masticatory force during cortically induced rhythmic jaw movements in the anesthetized rabbit.
To examine the relationships between masticatory force, electromyogram (EMG) of masticatory muscles, and jaw movement pattern, we quantitatively evaluated the effects of changing hardness of a chewing substance on these three variables. Cortically induced rhythmic jaw movements of a crescent-shaped pattern were induced by electrical stimulation of the cerebral cortical masticatory area in the a...
متن کاملComparison of external load compensation during rhythmic arm movements and rhythmic jaw movements in humans.
Experiments were performed on human elbow flexor and extensor muscles and jaw-opening and -closing muscles to observe the effect on rhythmic movements of sudden loading. The load was provided by an electromagnetic device, which simulated the appearance of a smoothly increasing spring-like load. The responses to this loading were compared in jaw and elbow movements and between expected and unexp...
متن کاملInterrelation between rhythmic mastication and reflex deglutition as studied on the unitary activity of trigeminal motoneurons in rabbits.
Cortically evoked rhythmic mastication was variously modified by stimulation of the superior laryngeal nerve and by elicitation of reflex swallowing in rabbits under light ether anesthesia.The recording of the unitary activity was made from motoneurons in the motor nucleus of the trigeminal nerve or from motor fibers in the trigeminal nerve to study the neural mechanism subserving such modifica...
متن کاملLocomotor-Like Leg Movements Evoked by Rhythmic Arm Movements in Humans
Motion of the upper limbs is often coupled to that of the lower limbs in human bipedal locomotion. It is unclear, however, whether the functional coupling between upper and lower limbs is bi-directional, i.e. whether arm movements can affect the lumbosacral locomotor circuitry. Here we tested the effects of voluntary rhythmic arm movements on the lower limbs. Participants lay horizontally on th...
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ژورنال
عنوان ژورنال: The Japanese Journal of Physiology
سال: 1977
ISSN: 1881-1396,0021-521X
DOI: 10.2170/jjphysiol.27.391