Vestibular Labyrinth

2020 ◽  
Author(s):  
Keyword(s):  
Vestibular Labyrinth

Electrophysical Properties and Transfer Function of the Vestibular Labyrinth

2021 ◽  
Vol 63 (11) ◽  
pp. 2004-2012
Author(s):  
V. P. Demkin ◽  
S. V. Melnichuk ◽  
M. D. Akinina ◽  
O. V. Demkin
Keyword(s):  
Transfer Function ◽  
Electrophysical Properties ◽  
Vestibular Labyrinth

CHANGES IN THE VESTIBULAR LABYRINTH WITH INTENSE SOUND

1959 ◽  
Vol 69 (12) ◽  
pp. 1478???1493 ◽  
Author(s):  
Pedro L. Mangabeira-Albernaz ◽  
Walter P. Covell ◽  
Donald H. Eldredge
Keyword(s):  
Vestibular Labyrinth

On the vestibular labyrinth of Brachiosaurus brancai

2005 ◽  
Vol 15 (2) ◽  
pp. 65-71
Author(s):  
A.H. Clarke
Keyword(s):  
Body Mass ◽  
Cranial Nerves ◽  
Semicircular Canals ◽  
Upper Jurassic ◽  
Allometric Relationship ◽  
Vestibular Labyrinth ◽  
Extant Species ◽  
Acoustic Nerve ◽  
The Relationship ◽  
Photogrammetric Measurement

The extensive remains of large sauropods, excavated in the Upper Jurassic layers of the Tendaguru region of Tanzania, East Africa by Janensch [15], include an intact fossil cast of a vestibular labyrinth and an endocast of the large Brachiosaurus brancai. The approximately 150 million year old labyrinth cast demonstrates clearly a form and organisation congruent in detail to those of extant vertebrate species. Besides the near-orthogonal arrangement of semicircular canals (SCCs), the superior and inferior branches of the vestibulo-acoustic nerve, the endolymphatic duct, the oval and round windows, and the cochlea can be identified. The orientation of the labyrinth in the temporal bone is also equivalent to that of many extant vertebrates. Furthermore, the existence of the twelve cranial nerves can be identified from the endocast. The present study was initiated after the photogrammetric measurement of the skeleton volume of B. brancai [13] yielded a realistic estimate of body mass (74.42 metric tons). Dimensional analysis shows that body mass and average SCC dimensions of B. brancai generally fit with the allometric relationship found in previous studies of extant species. However, the anterior SCC is significantly larger than the allometric relationship would predict. This would indicate greater sensitivity, supporting the idea that the behavioural repertoire must have included much slower pitch movements of the head. These slower movements would most likely have involved flexion of the neck, rather than head pitching about the atlas joint. Pursuing the relationship between body mass and SCC dimensions further, the SCC frequency response is estimated by scaling up from the SCC dimensions of the rhesus monkey; this yields a range between 0.008–26 Hz, approximately one octave lower than for humans.

Electrophysiological Properties of Rat Vestibular Labyrinth and Their Effect on Parameters of Transmitted Voltage Pulses

2018 ◽  
Vol 164 (6) ◽  
pp. 707-711
Author(s):  
V. P. Demkin ◽  
V. V. Udut ◽  
P. P. Shchetinin ◽  
M. V. Svetlik ◽  
S. V. Mel’nichuk ◽  
...  
Keyword(s):  
Electrophysiological Properties ◽  
Vestibular Labyrinth ◽  
Voltage Pulses

Central Projections from Singular Parts of the Vestibular Labyrinth in the Guinea Pig

1992 ◽  
Vol 112 (3) ◽  
pp. 486-495 ◽  
Author(s):  
Wolfgang Gstoettner ◽  
Martin Burian ◽  
Monika Cartellieri
Keyword(s):  
Guinea Pig ◽  
Central Projections ◽  
Vestibular Labyrinth

Crosslinks between stereocilia in hair cells of the human and guinea pig vestibular labyrinth

1986 ◽  
Vol 100 (12) ◽  
pp. 1367-1374 ◽  
Author(s):  
David J. Jeffries ◽  
James O. Pickles ◽  
Michael P. Osborne ◽  
Peter H. Rhys-Evans ◽  
Spiro D. Comis
Keyword(s):  
Guinea Pig ◽  
Hair Cells ◽  
Semicircular Canals ◽  
Sensory Transduction ◽  
Hair Bundle ◽  
Vestibular Labyrinth ◽  
Vestibular Hair Cells ◽  
Cuticular Plate ◽  
Temporal Bones

AbstractThe saccules and ampullae of the semicircular canals from human and guinea pig temporal bones were fixed in glutaraldehyde without osmium. Crosslinks were seen between stereocilia of the vestibular hair cells, similar to those previously demonstrated in the guinea pig, although an additional set of crosslinks was displayed: first, horizontal crosslinks were seen between adjacent stereocilia, occupying most of the length of the hair bundle; secondly, a single upward-pointing link ran from the apex of each shorter stereocilium into the shaft of the adjacent taller ster-eocilium; thirdly, an extensive array of horizontal links were demonstrated between stereocilia close to their insertion into the cuticular plate. We suggest that these basal crosslinks support the long vestibular stereocilia rendering them more rigid, and that the upwind pointing crosslinks are responsible for the initiation of sensory transduction.

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