2 edition of Neural activity in the vestibular nuclei of the cat found in the catalog.
Neural activity in the vestibular nuclei of the cat
J. H Ryu
Bibliography: p. 26-28
|Statement||J.H. Ryu, B.F. McCabe|
|Series||The Annals of Otology, Rhinology & Laryngology ; Suppl. no. 9, Annals of otology, rhinology & laryngology -- 9|
|Contributions||McCabe, Brian F.|
|The Physical Object|
|Pagination||28 p. :|
|Number of Pages||28|
Note: Animals with bilateral vestibular disease usually show a crouched posture, wide head excursions, wide base stance and decrease or absence in physiologic nystagmus when turning the head from side to side. Note: Paradoxical vestibular disease is a form of central vestibular disease with clinical signs (head tilt, nystagmus) lateralized opposite of what one would expect with unilateral File Size: KB. Introduction. The vestibular system detects motion and gravity and initiates movements to maintain balance and orientation. It consists of a set of sensory organs in the inner ear, sensory afferents that link the sensory organs to the brain stem, a set of vestibular nuclei within the brain stem, and the projections of these nuclei to interneurons and motor neurons in the brain stem and spinal cord.
-converted into neural signals that are conveyed by the vestibular nerve to the vestibular nuclei Projections to the vestibular nuclei contribute to 1. sensory info about head movement and head position relative to gravity. Structure Path. The fibers of the vestibular nerve enter the medulla oblongata on the medial side of those of the cochlear, and pass between the inferior peduncle and the spinal tract of the trigeminal nerve.. They then divide into ascending and descending fibers. The latter end by arborizing around the cells of the medial nucleus, which is situated in the area acustica of the rhomboid : AICA, PICA.
1. Afferent signals come into the brainstem via CN 8 & synapse on cell bodies in the ipsilateral Vestibular Nuclei 2. The Vestibular Nuclei send projections to motor nuclei of CN 6 on the contralateral side note: the Vestibular Nuclei also send direct projections to motor nuclei of CN 3, 4, & 6 on the ipsilateral side up the ipsilateral MLF 3. Start studying Vestibular Nuclei. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
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Ann Otol Rhinol Laryngol. Nov-Dec;Suppl Neural activity in the vestibular nuclei of the cat. Ryu JH, McCabe BF. PMID: Cited by: Get this from a library. Neural activity in the vestibular nuclei of the cat [by] J.H. Ryu [and] B.F. McCabe. [J H Ryu; Brian F McCabe; National Institute of Neurological Diseases and Stroke.].
Experiments were carried out on cats anesthetized with chloralose, small doses of Thiopental being added in about half of the animals. Recordings were made from neurones located in Deiters' nucleus.
Single shocks applied to the spinal cord evoked membrane potential changes consisting of different types of PSPs. Current analysis revealed: EPSPs, IPSPs, and potential changes due to Cited by: ten Bruggencate, G., Teichmann, R., Weller, E.: Neuronal activity in the lateral vestibular nucleus of the cat.
Patterns of postsynaptic potentials and discharges in Deiters neurones evoked by stimulation of the spinal cord. Pflügers Arch, – () Google ScholarCited by: Intracellular records from neurones located in Deiter's nucleus were evaluated in respect to IPSPs evoked by stimulation of the spinal cord.
In 85% of the cells, short latency IPSPs were observed (less than ms from C2-level), attributable to fast conducting pathways. The majority of them (3– ms) includes activity transmitted via the cerebellar cortex, while latencies between Cited by: Ryu JH, McCabe BF () Neural activity in the vestibular nuclei of the cat.
Ann Otol Rhinol Laryngol 82 [Suppl 9]: 3–28 PubMed Google Scholar Schwaber JS, Kapp BS, Higgins GA, Rapp PR () Amygdaloid and basal forebrain direct connections with the nucleus of the solitary tract and the dorsal motor by: The present work based on extra- and intracellular recording of both ocular motoneurons and vestibular nuclei neurons in the encéphale isolé cat shows that vestibular nystagmus is organized at a premotor level (vestibular and reticular) and that the MLF carries both slow and fast phase.
The exact nature of the interplay between the vestibular nuclei and the reticular formation is not fully Cited by: 3. Details of cerebellar afferent projections from the vestibular nuclei were investigated by the method of retrograde axonal transport of horseradish peroxidase (HRP) in the cat.
The first two waves, P 1 and P 2, had latencies of and ms, respectively, and coincided with the recorded gross neural activity in the vestibular nerve and nuclei, respectively.
Single second-order vestibular neurons with low and irregular activity responded to the same acceleration impulses with a latency as short as by: At the end of each experiment a small electro- lyric lesion was made, The locations of recorded neurons were determined histologically, RESULTS The resting discharge rates and the neural re- sponse characteristics of 80 semicircular canal- sensitive neurons in the vestibular nuclei of 24 cats were recorded, All 80 neurons were within the boundaries of the vestibular nuclei by the histologic criteria established by Brodal.5 Among the 80 neurons Cited by: 4.
Waespe, W. & Henn, V. Neuronal activity in the vestibular nuclei of the alert monkey during vestibular and optokinetic stimulation. Exp. Brain Res.
27, – ().Cited by: Neuronal responses to stimulation of vestibular (V1), motor and orbital brain cortex were recorded extracellularly in lateral and medial vestibular nuclei of bulbar complex in experiments carried on nonanesthetized immobilized cats.
Both phasic and (more often) tonic responses mainly of inhibitory type were : Krasnopol'skiĭ Sz, Raĭtses Vs. New neurons in the vestibular nuclei complex after unilateral vestibular neurectomy in the adult cat Article in European Journal of Neuroscience 25(1) February with 58 Reads.
Vestibular nucleus neurons respond to hindlimb movement in the decerebrate cat Milad S. Arshian,1,3 Candace E. Hobson, 1Michael F. Catanzaro,1,2 Daniel J. Miller. Extracellular activity from vestibular nuclei neurons and vertical eye movements were recorded in the alert cat during sinusoidal optokinetic stimulation in the vertical plane at frequencies.
The cerebral cortex in the cat has been examined for responses to contra-lateral vestibular nerve shocks and to natural stimuli.
Stimulation of the nerve produces short latency (35 msec) surface positive responses in very restricted areas. Within these areas, unitary discharges occur during the equivalent negative phase below the surface.
by: In the rat model of acute unilateral labyrinthectomy, serial FDG-MicroPET revealed an immediate asymmetry of cerebral regional glucose metabolism (rCGM) in the vestibular nuclei complexes and related vestibular signal processing structures (vestibulo-cerebellum, thalamus, temporoparietal cortex, hippocampus) which was re-balanced within 1 week when ataxia had Cited by: Vestibular, auditory, and somatic input to the posterior thalamus of the cat Article (PDF Available) in Experimental Brain Research 34(1) February with 46 Reads How we measure 'reads'.
The Cerebellovestibular Interaction in the Cat's Vestibular Nuclei Neurons MASAO ITO University of Tokyo SUMMARY Postsynaptic effects of the vestibular and cerebellar impulses were investigated in the cat's vestib- ular nuclei neurons with intracellular recording techniques.
Bilateral labyrinthectomized cats showed no nystagmus, but had unsteady head movements and wide gaits. Neural activity in both sides of the medial vestibular nuclei (MVN) was depressed during the critical stage of compensation; however, the neural activity was full and normal during the acute and compensated by:.
The vestibular system provides a critical role to coordinate balance and movement, yet it remains an underappreciated sense. Functional MRI (fMRI) reveals much information about brain-wide sensory and cognitive processes.
However, fMRI mapping of regions that actively process vestibular information remains technically challenging, as it can permit only limited movement during by: 2.The medial, lateral (Deiter's), and descending (inferior) nuclei contribute to the medial and lateral vestibulospinal tracts which provide direct vestibular influence on the spinal cord.
Neurons in the superior and medial vestibular nuclei mediate vestibulo-ocular reflexes (Chapter 32).nerve to explore the possibility that the posterior nuclei of the cat relay vestibular activity to the cerebral cortex.
If a relay is located in this region, the units should respond to stimulation of the vestibular nerve at shorter latencies than responses recorded in the cerebral cortex.