Functional organization of the vestibular input to ocular motoneurons of the frog
| Autor: | P. C. Schwindt, Wolfgang Precht, P. C. Magherini |
|---|---|
| Rok vydání: | 1974 |
| Předmět: |
Cerebellum
genetic structures Physiology Ocular motor Clinical Biochemistry Rana temporaria Stimulation Biology Vestibular Nerve Synaptic Transmission Oculomotor nucleus Vestibular nuclei Abducens Nerve Oculomotor Nerve Physiology (medical) Reciprocal innervation Reflex medicine Animals Evoked Potentials Vestibular system Motor Neurons musculoskeletal neural and ocular physiology Rana esculenta Neural Inhibition Anatomy Vestibulocochlear Nerve musculoskeletal system medicine.anatomical_structure nervous system Ear Inner sense organs Functional organization Anura Neuroscience |
| Zdroj: | Pflugers Archiv : European journal of physiology. 349(2) |
| ISSN: | 0031-6768 |
| Popis: | 1. Field and intracellular potentials were recorded in the abducens and oculomotor nuclei of the frog following stimulation of the anterior branch of the ipsi- and contralateral vestibular nerves. 2. Intracellular recordings from ocular motoneurons demonstrated that in frogs, as in higher vertebrates, there exists a reciprocal labyrinthine innervation of ocular motoneurons. For example, abducens motoneurons received inhibition and excitation from the ipsi- and contralateral VIIIth nerves, respectively. 3. Vestibular impulses arrived in the motor nuclei ca. 1.7 msec after VIIIth nerve stimulation, and the earliest EPSPs and IPSPs were produced in motoneurons ca. 2.5 msec after stimulation. These data suggest a disynaptic linkage between the VIIIth nerve and the ocular motor nuclei. 4. Removal of the cerebellum had no influence on the vestibular-evoked PSPs recorded in motoneurons. This finding suggested that the PSPs were produced through pathways running via the vestibular nuclei and the MLF to motoneurons. |
| Databáze: | OpenAIRE |
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