Convergence of posterior semicircular canal and saccular inputs in single vestibular nuclei neurons in cats.

Convergence of posterior semicircular canal and saccular inputs in single vestibular nuclei neurons in cats. Research Abstract Details 

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Convergence of posterior semicircular canal and saccular inputs in single vestibular nuclei neurons in cats. Abstract Text:

H Sato,M Imagawa,K Kushiro,M Zakir,Y Uchino,

Convergence between posterior canal (PC) and saccular (SAC) inputs in single vestibular nuclei neurons was investigated in decerebrated cats. Postsynaptic potentials were recorded intracellularly after selective stimulation of the SAC and PC nerves. Stimulation of either the SAC or PC nerve orthodromically activated 143 vestibular nuclei neurons. Of these, 61 (43%) were antidromically activated by stimulation of the C1-C2 junction, 14 (10%) were antidromically activated by stimulation of the oculomotor or trochlear nucleus, and 14 (10%) were antidromically activated by stimulation of both the oculomotor or trochlear nucleus and the spinal cord. Fifty-four (38%) neurons were not activated by stimulation of either or both. We named these neurons vestibulospinal (VS), vestibulo-ocular (VO), vestibulooculo-spinal (VOS) and vestibular (V) neurons, respectively. Both PC and SAC inputs converged in 47 vestibular nuclei neurons (26 VS, 2 VO, 6 VOS and 13 V neurons). Of these, 19 received monosynaptic excitatory inputs from both nerves. This input pattern was frequently seen in VS neurons. Approximately half of the convergent VS neurons descended to the spinal cord through the lateral vestibulospinal tract. The remaining half and all the convergent VOS neurons descended to the spinal cord through the medial vestibulospinal tract. Most of the convergent neurons were located in the lateral nucleus or descending nucleus.

Convergence of posterior semicircular canal and saccular inputs in single vestibular nuclei neurons in cats. Publishing Authors By Initials

H Sato,M Imagawa,K Kushiro,M Zakir,Y Uchino,

For similar nervous system: peripheral nervous system: peripheral nerves: cranial nerves: vestibulocochlear nerve: vestibular nerve research abstracts see: nervous system: peripheral nervous system: peripheral nerves: cranial nerves: vestibulocochlear nerve: vestibular nerve research

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Convergence of posterior semicircular canal and saccular inputs in single vestibular nuclei neurons in cats. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Experimental brain research. Experimentelle Hirnfo

VOLUME: 131

Page Numbers: 253-61

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ISSN: 0014-4819

DAY: 15

MONTH: Apr

YEAR: 2000

Convergence of posterior semicircular canal and saccular inputs in single vestibular nuclei neurons in cats. Information

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LANGUAGE: eng

NlmUniqueID: 43312

Convergence of posterior semicircular canal and saccular inputs in single vestibular nuclei neurons in cats. Keywords Mesh Terms:

KEYWORDS: Vestibular Nerve

MESH TERMS: physiology

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Grant and Affiliation Information for Convergence of posterior semicircular canal and saccular inputs in single vestibular nuclei neurons in cats.

AFFILIATION: Department of Physiology, Tokyo Medical University, Japan.

Country: GERMANY

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MEDLINETA: Exp Brain Res

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