Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Cholinergic innervation of the rat's labyrinth (1986)
    Springer
    Experimental brain research 64 (1986), S. 19-26 
    Details
    ISSN: 1432-1106
    Keywords: Cholinergic innervation ; Brain stem ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Efferent vestibular and cochlear neurons were identified in the rat's brain stem by retrograde labelling with True Blue (TB) or wheat germ agglutinin — horseradish peroxidase (WGA-HRP) injected into the utricle. Such cells were found at the same locations described in 1983 by White and Warr (ipsilateral superior olivary nucleus (LSO), bilateral latero-ventral nucleus of the trapezoid body (LTz) bilateral group E medial and lateral to the genu facialis) and, in addition, bilaterally in the caudal pontine reticular nucleus (CPR) at the level of the descending facial nerve. Cholinergic neurons were identified by counterstaining sections containing TB filled perikarya for (1) acetylcholinesterase (AChE) following pretreatment with diisopropylfluorophosphate (DFP) or (2) choline acetyltransferase (ChAT), by immunohistochemistry with highly specific monoclonal antibodies. Many, but not all, vestibular efferent cell bodies located in group E were shown to be cholinergic. These and other recently published data suggest that the efferent octavus system may consist of a number of chemically distinct cell groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238197
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Response of the human vestibulo-ocular reflex following long-term 2x magnified visual input (1985)
    Springer
    Experimental brain research 57 (1985), S. 448-455 
    Details
    ISSN: 1432-1106
    Keywords: Vestibulo-ocular reflex ; Central motor programmes ; Random oscillation ; Magnified visual input ; Adaptation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This study examines the contribution of predictive motor programming to the adjustment of vestibulo-ocular reflex (VOR) gains after exposure to spectacles with a 2x magnification. When fully adapted, subjects exhibited two-fold gain increases with a 3 Hz sinewave stimulus with both an imaginary earth-fixed and imaginary moving target. Before complete adaptation was achieved, quick phases embedded in the slow component were observed intermittently which compensated for insufficient VOR gain. At 0.5 Hz in the same state of full adaptation during fixation of an imaginary earth-fixed target subjects exhibited a gain increase of only approximately 75% indicating that the contribution of VOR adjustment is not sufficient for perfect visual stabilization at lower frequencies. Over the range of random stimulation (0.5–5 Hz), the VOR failed to exhibit complete adaptation. The degree of adaptation derived with a VOR-cancellation task was less overall than that with a task requiring perfect compensatory eye movements. These findings indicate that central motor programmes are required in the adaptive process to achieve visual stability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00237831
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Electrophysiological evaluation of chloroform-induced inner ear damage (1987)
    Springer
    European archives of oto-rhino-laryngology and head & neck 244 (1987), S. 222-228 
    Details
    ISSN: 1434-4726
    Keywords: Chloroform ; Labyrinthectomy ; Cochlear damage ; Electrocochleography ; Auditory brainstem response
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Local placement of chloroform in either the external or the middle ear has been previously reported to induce a chemical labyrinthectomy. In order to examine the value of this effect as a research tool, we injected chloroform into the middle ears of guinea pigs and rats. Cochlear damage was assessed by electrocochleography (ECochG) and auditory brainstem response (ABR) audiometry. Both species developed complete deafness within a few hours after instillation of the chloroform. The deafness was permanent in the guinea pigs, whereas there was a partial recovery of auditory function in the rats. The survival rate of the auditory nerve fibers was estimated by measuring the ABR evoked by electrical stimulation via the scala tympani (EABR). A normal EABR recruitment pattern suggested that the main chloroform effect was located peripheral to the afferent axons. In conclusion, chloroform must be considered a severely ototoxic agent when applied locally.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00455310
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...