Biomaterial Database

[Electrophysiology of vestibulo-ocular reflexes]. 1978

G Horcholle-Bossavit

Electrophysiological and morphological properties of premotor neurones in the vestibulo-ocular system have been studied intracellularly in the unanesthetized "encéphale isolé" cat. 1. Secondary neurones of the vestibulo-abducens reflex, identified both by their antidromic and orthodromic responses, showed no nystagmic modulation of their activity. 2. Only 12% of the recorded population in the medial vestibular nucleus showed burst firing patterns correlated with the phases of nystagmus. 3. Two classes of neurones which did not respond to stimulation of the abducens nerve were recorded in the abducens nucleus. The first were inhibited by phasic vestibular stimulation and fired 180 degrees out of phase with the ipsalateral motor nerve discharge. The second type of neurones was excited by vestibular stimulation and fired in synchrony with the motor nerve activity.

UI	MeSH Term	Description	Entries
D009046	Motor Neurons	Neurons which activate MUSCLE CELLS.	Neurons, Motor,Alpha Motorneurons,Motoneurons,Motor Neurons, Alpha,Neurons, Alpha Motor,Alpha Motor Neuron,Alpha Motor Neurons,Alpha Motorneuron,Motoneuron,Motor Neuron,Motor Neuron, Alpha,Motorneuron, Alpha,Motorneurons, Alpha,Neuron, Alpha Motor,Neuron, Motor
D012018	Reflex	An involuntary movement or exercise of function in a part, excited in response to a stimulus applied to the periphery and transmitted to the brain or spinal cord.
D002415	Cats	The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)	Felis catus,Felis domesticus,Domestic Cats,Felis domestica,Felis sylvestris catus,Cat,Cat, Domestic,Cats, Domestic,Domestic Cat
D004584	Electronystagmography	Recording of nystagmus based on changes in the electrical field surrounding the eye produced by the difference in potential between the cornea and the retina.	Electronystagmographies
D000010	Abducens Nerve	The 6th cranial nerve which originates in the ABDUCENS NUCLEUS of the PONS and sends motor fibers to the lateral rectus muscles of the EYE. Damage to the nerve or its nucleus disrupts horizontal eye movement control.	Cranial Nerve VI,Sixth Cranial Nerve,Abducent Nerve,Nerve VI,Nervus Abducens,Abducen, Nervus,Abducens, Nervus,Abducent Nerves,Cranial Nerve VIs,Cranial Nerve, Sixth,Nerve VI, Cranial,Nerve VIs,Nerve VIs, Cranial,Nerve, Abducens,Nerve, Abducent,Nerve, Sixth Cranial,Nerves, Sixth Cranial,Nervus Abducen,Sixth Cranial Nerves
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
D014725	Vestibular Nerve	The vestibular part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The vestibular nerve fibers arise from neurons of Scarpa's ganglion and project peripherally to vestibular hair cells and centrally to the VESTIBULAR NUCLEI of the BRAIN STEM. These fibers mediate the sense of balance and head position.	Scarpa's Ganglion,Ganglion, Scarpa's,Nerve, Vestibular,Nerves, Vestibular,Scarpa Ganglion,Scarpas Ganglion,Vestibular Nerves
D014726	Vestibular Nuclei	The four cellular masses in the floor of the fourth ventricle giving rise to a widely dispersed special sensory system. Included is the superior, medial, inferior, and LATERAL VESTIBULAR NUCLEUS. (From Dorland, 27th ed)	Schwalbe Nucleus,Vestibular Nucleus, Medial,Schwalbe's Nucleus,Medial Vestibular Nucleus,Nuclei, Vestibular,Nucleus, Medial Vestibular,Nucleus, Schwalbe,Nucleus, Schwalbe's,Schwalbes Nucleus