The organ of Corti in the bat Hipposideros bicolor

Dannhof, Bernhard J.; Bruns, Volkmar

doi:10.1016/0378-5955(91)90059-i

Cited by 27 publications

(17 citation statements)

References 31 publications

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“…It is unique in echolocating bat species that IHCs stereocilia length is longer than the OHCs stereocilia in the same region, and our study of 4 echolocating bat species agrees with data for Rhinolophus rouxi [10] , Pteronotus parnellii [12] and Hipposideros bicolor [14] . We suppose that the adaptation of IHCs stereocilia to high frequency is inferior to that of OHCs stereocilia, as the IHCs stereocilia play a passive role in the electro-mechanical transduction [30] .…”

Section: Ihcs Stereociliasupporting

confidence: 93%

“…As previous research has shown, the auditory stereocilia length at the basal turn of cochlea in Rhinolophus rouxi [10] , Pteronotus parnellii [12] , Hipposideros bicolor [14] and Tadarida brasiliensis [15] is shorter than those found in non-echolocating mammals. The results of this research on the stereocilia of 4 echolocating bat species support the theory that specialized short stereocilium is an adaptation of high frequency sonic.…”

Section: Ohcs Stereociliamentioning

confidence: 67%

“…In isolated immature rats (Rattus norveaicus) [7] , mice (Mus museulm) [8] , guinea pigs (Cavia porcellus) [9] and humans [9] the dimensions of stereocilia have been estimated. Previous research has investigated the dimensions and function of auditory stereocilia in a number of bat species such as rufous horseshoe bats (Rhinolophus rouxi [10,11] ), mustache bat (Pteronotus parnellii [12,13] ), bicoloured leaf-nosed bat (Hipposideros bicolor [14] ) and Brazilian free-tailed bat (Tadarida brasiliensis [15] ).…”

mentioning

confidence: 99%

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Characteristics of echolocating bats’ auditory stereocilia length, compared with other mammals

et al. 2007

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The stereocilia of the Organ of Corti in 4 different echolocating bats, Myotis adversus, Murina leucogaster, Nyctalus plancyi (Nyctalus velutinus), and Rhinolophus ferrumequinum were observed by using scanning electron microscopy (SEM). Stereocilia lengths were estimated for comparison with those of non-echolocating mammals. The specialized lengths of outer hair cells (OHC) stereocilia in echolocating bats were shorter than those of non-echolocating mammals. The specialized lengths of inner hair cells (IHC) stereocilia were longer than those of outer hair cells stereocilia in the Organ of Corti of echolocating bats. These characteristics of the auditory stereocilia length of echolocating bats represent the fine architecture of the electromotility process, helping to adapt to high frequency sound and echolocation.

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Section: Ihcs Stereociliasupporting

confidence: 93%

Section: Ohcs Stereociliamentioning

confidence: 67%

mentioning

confidence: 99%

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Characteristics of echolocating bats’ auditory stereocilia length, compared with other mammals

et al. 2007

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“…Morphological specializations for ultrasonic hearing are revealed in the organ of Corti of echolocating microchiropteran, bats, as typified by the horseshoe and mustache bats, which emit constant frequency calls and many other bats, for example, hipposiderid leaf-nosed bats, which do not (Henson & Henson, 1979;Dannhof & Bruns, 1991;reviewed in Vater & Kössl, 2011;Fig. 6a, c).…”

Section: Organ Of Corti Of Echolocating Batsmentioning

confidence: 99%

“…(Top) lower basal turn; (bottom) upper basal turn. (a afterDannhof & Bruns, 1991; b after Bruns et al 1988; c after Vater & Kössl, 1996.) Scale bar: 200 μm.…”

mentioning

confidence: 97%

Roles for Prestin in Harnessing the Basilar Membrane to the Organ of Corti

Russell

2013

Insights From Comparative Hearing Research

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Postnatal maturation of the organ of Corti in gerbils: Morphology and physiological responses

1997

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The organ of Corti, the sensory epithelium of hearing in mammals, matures postnatally in the gerbil. Quantitative analyses of the postnatal development of the organ of Corti, including supporting cells and the basilar membrane, were carried out. The morphological study confirmed that maturation of the sensory cells proceeds with a base-to-apex gradient, with the outer hair cells appearing to mature before the inner hair cells. Maturation of the supporting cells and the basilar membrane commenced first in the middle turn. Expansion of the second row of Deiters' cells began at 6 days after birth in the middle turn, before enlargement of the pillar cell heads at 8 days postnatally. Pillar cell head enlargement continued until 20 days postnatally in the middle turn. The tunnel of Corti and spaces of Nuel appeared first in the middle turn between 8 and 10 days postnatally. The maturation of the basilar membrane involved the thickening of the central hyaline layer and a reduction in the epithelial cells on the tympanic aspect. This process continued until about 20 days after birth. The cochlear microphonic potential, whole nerve action potential, and stimulus frequency otoacoustic emissions were recorded from 12 days after birth onward and related to changes in organ of Corti morphology. The results show that changes in the accessory structures continue throughout the period of onset and development of cochlear responses between 12 and 20 days after birth, and may therefore influence the micromechanical responses of the organ of Corti to acoustic stimuli during this period.

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The organ of Corti in the bat Hipposideros bicolor

Cited by 27 publications

References 31 publications

Characteristics of echolocating bats’ auditory stereocilia length, compared with other mammals

Characteristics of echolocating bats’ auditory stereocilia length, compared with other mammals

Roles for Prestin in Harnessing the Basilar Membrane to the Organ of Corti

Postnatal maturation of the organ of Corti in gerbils: Morphology and physiological responses

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