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  • 1
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    A study of the mechanism of the pairwise activity of the vestibular apparatus 〈k izucheniyu mekhanizma parnoy raboty vestibulyarnogo apparata〈 (1964)
    In:  CASI
    Details
    Publication Date: 2019-05-22
    Description: Electrophysiological study of vestibular apparatus mechanisms and interconnections between canals and nuclei in medulla oblongata of cats
    Keywords: MASERS
    Type: NASA-TT-F-9147
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Influence of mobility restriction on habituation of the vestibular apparatus (1980)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Test results presented indicate that 30-day hypokinesia did not affect the intensity of nystagmus: velocity of slow phase, total number of jerks, and duration of the reaction in animals were the same as before mobility restriction and did not differ from those of the control group. However, hypokinesia resulted in the disappearance of habituation of the vestibulary system to repeated angular accelerations. The known hypokinetic changes in the endocrine system were studied. It was concluded that reduction in adrenergic function may be the cause of disappearance of vestibular apparatus habituation during hypokinesia.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: NASA-TM-75995
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Vestibular reactions to long-term caloric stimulation of the rabbit labyrinth (1978)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: Long-term, periodically repeated caloric stimulation of the labyrinth receptors of the internal ear was studied on eight rabbits with immobilzed heads. Warm (20 C) water was used as a stimulus in a dose of 40 ml per min injected into the auditory meatus.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: NASA-TM-75528
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  • 4
    Electronic Resource
    Electronic Resource
    A phenomenon in vestibular compensation (1979)
    Springer
    Bulletin of experimental biology and medicine 88 (1979), S. 694-696 
    Details
    ISSN: 1573-8221
    Keywords: vestibular system ; compensation of disturbed functions ; effects of general anesthesia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The role of spinal afferentation from the lower half of the body in compensation of the sequelae of unilateral loss of vestibular function was studied in experiments on guinea pigs. Division of the spinal cord at the thoracic level under local anesthesia had no appreciable effect on the development of compensation after simultaneous or subsequent destruction of the labyrinth and did not disturb compensation in previously labyrinthectomized animals. Division of the spinal cord in labyrinthectomized animals under ether or chloroform anesthesia was accompanied by a sharp disturbance of compensation. These substances evoked a similar picture of decompensation in unilaterally labyrinthectomized animals with an intact spinal cord also. The results indicate that the disturbance of vestibular compensation discribed in the literature after division of the spinal cord under ether anesthesia is not the result of removal of spinal afferentation from the lower half of the body, but is due to the direct effect of inhalational anesthetics on compensation mechanisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00804766
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Study of compensation after unilateral loss of vestibular function (1978)
    Springer
    Bulletin of experimental biology and medicine 85 (1978), S. 143-146 
    Details
    ISSN: 1573-8221
    Keywords: vestibular system ; deprivational and positional nystagmus ; compensation of disturbed functions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The dynamics of compensation of the after-effects of unilateral destruction of the labyrinth was studied in rabbits. Destruction of the labyrinth was followed by nystagmus, an increase in the external respiration and heart rates, and EEG activation. The investigations revealed differences in the rate of extinction of these reactions with time. In the late stages after labyrinthectomy marked asymmetry of the nystagmic response of the eyes to angular accelerations of equal intensity but opposite direction was observed. Stimulation of the intact otolith apparatus was accompanied by the appearance of positional nystagmus. The results point to imperfection of the mechanisms of compensation after total unilateral loss of vestibular function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00800107
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of vestibular stimulation on neuronal activity in the visual cortex of the cat (1967)
    Springer
    Neuroscience and behavioral physiology 1 (1967), S. 153-159 
    Details
    ISSN: 1573-899X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Conclusions The effect of vestibular and nociceptive stimulation on the activity of individual neurons of cortical Area 17 was studied in unanesthetized, curarized cats. 1. Three types of reactions of these neurons to polarization of the labyrinth were found but similar types have also been found in nonvisual areas of the cortex. 2. Nociceptive stimulation of the skin activates all those neurons which are activated also by polarization of the labyrinth, but not the small number (14%) of neurons not reacting to polarization of the labyrinth. No inhibition of neuronal activity was observed either during polarization of the labyrinth or during nociceptive stimulation of the skin. 3. Polarization of the labyrinth and nociceptive stimulation of the skin intensify and stabilize the neuronal reaction to flashes against the background of electroencephalographic activation. 4. The identity of the effects of vestibular and nociceptive stimulation shows that the influence of polarization of the labyrinth on the primary visual cortex of the cat is not specific in character but is associated with the ensuing generalized activation of the cerebral cortex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01124394
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  • 7
    Electronic Resource
    Electronic Resource
    Role of the sensory innervation of the extraocular muscles in habituation of vestibulo-oculomotor responses (1980)
    Springer
    Neuroscience and behavioral physiology 10 (1980), S. 248-254 
    Details
    ISSN: 1573-899X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The role of the sensory innervation of the extraocular muscles in extinction of reflex nystagmus induced by periodic rotation with standard angular acceleration was studied in experiments on rabbits. Limitation or complete abolition of the motor activity of the extraocular muscles and also passive forced movements of the eyes were used. Comparison of results obtained with intact animals and animals with abolition of motor activity of the extraocular muscles showed no difference between them. In both cases the dynamics of extinction of nystagmus was the same. On the other hand, repeated forced movements of the eyes had no effect on reflex nystagmus of the eyes. It is concluded from the results that the proprioceptive efferent innervation of the extraocular muscles plays no part in habituation of vestibulo-oculomotor responses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01182220
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