Temperature-dependence of auditory nerve response properties in the frog

Stiebler, Imme; Narins, Peter M.

doi:10.1016/0378-5955(90)90140-k

Cited by 63 publications

(42 citation statements)

References 47 publications

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“…This results in an intermediate frequency region with diminished DPOAEs. The DPOAEs reported here most probably originated from the amphibian papilla, which is sensitive up to ca 1.5 kHz (Narins & Capranica 1976;Stiebler & Narins 1990). …”

Section: Discussionmentioning

confidence: 99%

Frequency matching of vocalizations to inner-ear sensitivity along an altitudinal gradient in the coqui frog

Meenderink

Kits²,

Narins

2009

Biol. Lett.

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Acoustic communication involves both the generation and the detection of a signal. In the coqui frog (Eleutherodactylus coqui ), it is known that the spectral contents of its calls systematically change with altitude above sea level. Here, distortion product otoacoustic emissions are used to assess the frequency range over which the inner ear is sensitive. It is found that both the spectral contents of the calls and the innerear sensitivity change in a similar fashion along an altitudinal gradient. As a result, the call frequencies and the auditory tuning are closely matched at all altitudes. We suggest that the animal's body size determines the frequency particulars of the call apparatus and the inner ear.

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Section: Discussionmentioning

confidence: 99%

Frequency matching of vocalizations to inner-ear sensitivity along an altitudinal gradient in the coqui frog

Meenderink

Kits²,

Narins

2009

Biol. Lett.

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“…In anurans, female preference for call spectral characters is temperature dependent, as is the tuning of auditory receptors (Stiebler and Narins, 1990;Smotherman and Narins, 1998;Gerhardt and Huber, 2002), even though the spectral characters of their calls are not (Gerhardt and Mudry, 1980). In tree crickets, where such spectral change is observed, little is known about the temperature dependence of either the behaviour, the neurobiology of the female preference or the biophysics of the tympanal membrane (but see Mhatre et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Matching sender and receiver: poikilothermy and frequency tuning in a tree cricket

Mhatre

Bhattacharya

Robert

et al. 2011

Journal of Experimental Biology

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SUMMARYAnimals communicate in non-ideal and noisy conditions. The primary method they use to improve communication efficiency is sender-receiver matching: the receiver's sensory mechanism filters the impinging signal based on the expected signal. In the context of acoustic communication in crickets, such a match is made in the frequency domain. The males broadcast a mate attraction signal, the calling song, in a narrow frequency band centred on the carrier frequency (CF), and the females are most sensitive to sound close to this frequency. In tree crickets, however, the CF changes with temperature. The mechanisms used by female tree crickets to accommodate this change in CF were investigated at the behavioural and biomechanical level. At the behavioural level, female tree crickets were broadly tuned and responded equally to CFs produced within the naturally occurring range of temperatures (18 to 27°C). To allow such a broad response, however, the transduction mechanisms that convert sound into mechanical and then neural signals must also have a broad response. The tympana of the female tree crickets exhibited a frequency response that was even broader than suggested by the behaviour. Their tympana vibrate with equal amplitude to frequencies spanning nearly an order of magnitude. Such a flat frequency response is unusual in biological systems and cannot be modelled as a simple mechanical system. This feature of the tree cricket auditory system not only has interesting implications for mate choice and species isolation but may also prove exciting for bio-mimetic applications such as the design of miniature low frequency microphones.

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“…Frogs need to respond to small amplitude, lowfrequency substrate-borne vibrations and low-frequency, rostral nerve fibers are thought to be more sensitive than caudal fibers (Zelick and Narins 1985;Narins 1987;Stiebler and Narins 1990;but see Feng et al 1975). The lowered nerve thresholds, i.e., increased sensitivity, found in the rostral portion of the AP may be due to the rostral hair cell linear response to low-intensity signals which would serve to extend the range of the rostral AP fibers to include lowamplitude signals.…”

Section: Differences In Exocytosis and Cabp Expression Between Caudalmentioning

confidence: 99%

Exocytosis in the Frog Amphibian Papilla

Quinones

Luu

Schweizer

et al. 2011

JARO

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Using whole-cell patch-clamp recordings, we measured changes in membrane capacitance (ΔC m ) in two subsets of hair cells from the leopard frog amphibian papilla (AP): the low-frequency (100-500 Hz), rostral hair cells and the high-frequency (500-1200 Hz), caudal hair cells, in order to investigate tonotopic differences in exocytosis. Depolarizations of both rostral and caudal hair cells evoked robust ΔC m responses of similar amplitude. However, the calcium dependence of release, i.e., the relationship between ΔC m relative to the amount of calcium influx (Q Ca 2+ ), was found to be linear in rostral hair cells but supra-linear in caudal hair cells. In addition, the higher numbers of vesicles released at caudal hair cell active zones suggests increased temporal precision of caudal hair cell exocytosis. ΔC m responses were also obtained in response to sinusoidal stimuli of varying frequency, but neither rostral nor caudal hair cell ΔC m revealed any frequency selectivity. While all AP hair cells express both otoferlin and synaptotagmin IV (SytIV), we obtained evidence of a tonotopic distribution of the calcium buffer calretinin which may further increase temporal resolution at the level of the hair cell synapse. Our findings suggest that the low (rostral) and high (caudal) frequency hair cells apply different mechanisms for fine-tuning exocytosis.

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Temperature-dependence of auditory nerve response properties in the frog

Cited by 63 publications

References 47 publications

Frequency matching of vocalizations to inner-ear sensitivity along an altitudinal gradient in the coqui frog

Frequency matching of vocalizations to inner-ear sensitivity along an altitudinal gradient in the coqui frog

Matching sender and receiver: poikilothermy and frequency tuning in a tree cricket

Exocytosis in the Frog Amphibian Papilla

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