BIOMAT Database Logo BIOMAT Database Logo

Oculomotor reflexes after semicircular canal plugging in cats. 1982

J Baker, and J Goldberg, and B Peterson, and R Schor

The horizontal ocular reflexes of cats were studied before and after plugging all 6 semicircular canals (2 cats) or the horizontal canals only (2 cats). After plugging, the vestibulo-ocular reflex (VOR) was virtually absent in the cats with all canals plugged; a small phase-advanced VOR was detectable only at high velocities of rotation. There was no VOR recovery over several months. A compensatory cervico-ocular reflex (COR) appeared within a few days of plugging in all cats, and increased in gain slowly over time. The cats with horizontal canals plugged had little VOR during yaw rotation with the head pitched near 30 degrees down from the stereotaxic plane. When the head was pitched nose up from this null plane, a horizontal VOR appeared and increased as the sine of pitch angle, indicating that the cats relied on normal or increased coupling of vertical canals to horizontal eye movers for generation of compensatory eye movements. Periods of compensatory and anticompensatory eye movements were recorded during downward pitched yaw.

UI MeSH Term Description Entries
D009802 Oculomotor Nerve The 3d cranial nerve. The oculomotor nerve sends motor fibers to the levator muscles of the eyelid and to the superior rectus, inferior rectus, and inferior oblique muscles of the eye. It also sends parasympathetic efferents (via the ciliary ganglion) to the muscles controlling pupillary constriction and accommodation. The motor fibers originate in the oculomotor nuclei of the midbrain. Cranial Nerve III,Third Cranial Nerve,Nerve III,Nervus Oculomotorius,Cranial Nerve IIIs,Cranial Nerve, Third,Cranial Nerves, Third,Nerve IIIs,Nerve, Oculomotor,Nerve, Third Cranial,Nerves, Oculomotor,Nerves, Third Cranial,Oculomotor Nerves,Oculomotorius, Nervus,Third Cranial Nerves
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
D005133 Eye Movements Voluntary or reflex-controlled movements of the eye. Eye Movement,Movement, Eye,Movements, Eye
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
D012399 Rotation Motion of an object in which either one or more points on a line are fixed. It is also the motion of a particle about a fixed point. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Clinorotation,Clinorotations,Rotations
D012665 Semicircular Canals Three long canals (anterior, posterior, and lateral) of the bony labyrinth. They are set at right angles to each other and are situated posterosuperior to the vestibule of the bony labyrinth (VESTIBULAR LABYRINTH). The semicircular canals have five openings into the vestibule with one shared by the anterior and the posterior canals. Within the canals are the SEMICIRCULAR DUCTS. Semi-Circular Canals,Canal, Semi-Circular,Canal, Semicircular,Semi Circular Canals,Semi-Circular Canal,Semicircular Canal
D013116 Spinal Cord A cylindrical column of tissue that lies within the vertebral canal. It is composed of WHITE MATTER and GRAY MATTER. Coccygeal Cord,Conus Medullaris,Conus Terminalis,Lumbar Cord,Medulla Spinalis,Myelon,Sacral Cord,Thoracic Cord,Coccygeal Cords,Conus Medullari,Conus Terminali,Cord, Coccygeal,Cord, Lumbar,Cord, Sacral,Cord, Spinal,Cord, Thoracic,Cords, Coccygeal,Cords, Lumbar,Cords, Sacral,Cords, Spinal,Cords, Thoracic,Lumbar Cords,Medulla Spinali,Medullari, Conus,Medullaris, Conus,Myelons,Sacral Cords,Spinal Cords,Spinali, Medulla,Spinalis, Medulla,Terminali, Conus,Terminalis, Conus,Thoracic Cords
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

Related Publications

J Baker, and J Goldberg, and B Peterson, and R Schor
Outcomes following Semicircular Canal Plugging.
September 2014, Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery,
J Baker, and J Goldberg, and B Peterson, and R Schor
Hearing Results after Transmastoid Superior Semicircular Canal Plugging for Superior Semicircular Canal Dehiscence: A Meta-Analysis.
October 2023, Audiology research,
J Baker, and J Goldberg, and B Peterson, and R Schor
Caloric nystagmus after plugging of the horizontal semicircular canal in pigeons.
January 1993, Environmental medicine : annual report of the Research Institute of Environmental Medicine, Nagoya University,
J Baker, and J Goldberg, and B Peterson, and R Schor
Postoperative MR imaging features after superior semicircular canal plugging in Minor syndrome.
November 2018, Diagnostic and interventional imaging,
J Baker, and J Goldberg, and B Peterson, and R Schor
Cochlear implantation and simultaneous posterior semicircular canal plugging.
November 2022, Cochlear implants international,
J Baker, and J Goldberg, and B Peterson, and R Schor
Quality of life outcomes after transmastoid plugging of superior semicircular canal dehiscence.
January 2020, American journal of otolaryngology,
J Baker, and J Goldberg, and B Peterson, and R Schor
Hearing and vestibular functions after plugging surgery for the posterior semicircular canal.
November 2009, Acta oto-laryngologica,
J Baker, and J Goldberg, and B Peterson, and R Schor
Hearing Outcomes After Surgical Manipulation of the Membranous Labyrinth During Superior Semicircular Canal Dehiscence Plugging or Posterior Semicircular Canal Occlusion.
July 2021, Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology,
J Baker, and J Goldberg, and B Peterson, and R Schor
Effectiveness of Transmastoid Plugging for Semicircular Canal Dehiscence Syndrome.
March 2018, Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery,
J Baker, and J Goldberg, and B Peterson, and R Schor
Dexamethasone protects the hearing of Meniere's disease patients after triple semicircular canal plugging.
October 2020, Acta oto-laryngologica,
Copied contents to your clipboard!