... attributed. Summary: Natterjack toads show slow development of auditory sensitivity and maturation of the middle ear, which occur around 500 days post-metamorphosis; development seems to depend more on animal size than on age. Anuran Development Hearing Middle ear Carlsbergfondet...

... animals are probably detecting both sound pressure and particle motion, therefore the impedance of tanks provides essential context for understanding reported hearing abilities ( Popper and Fay, 2011 ; Popper and Hawkins, 2019 ). Also, the impedance of a tank will influence the source levels required...

... directional otolithic ears in vertebrate evolutionary history. However, fossil evidence indicates that the water-adapted ear of early terrestrial tetrapods lacked specialized peripheral structures to transduce sound pressure (e.g. tympana). Therefore, early terrestrial hearing should have required nontympanic...

...Youenn Jézéquel; Ian T. Jones; Julien Bonnel; Laurent Chauvaud; Jelle Atema; T. Aran Mooney ABSTRACT Although many crustaceans produce sounds, their hearing abilities and mechanisms are poorly understood, leaving uncertainties regarding whether or how these animals use sound for acoustic...

...Tanya B. Lauridsen; Christian Brandt; Jakob Christensen-Dalsgaard ABSTRACT Hearing sensitivity has been extensively investigated, often by measuring the auditory brainstem response (ABR). ABR measurements are relatively non-invasive, easy to reproduce, and allow the assessment of sensitivity when...

...T. Aran Mooney; Adam Smith; Ole Næsbye Larsen; Kirstin Anderson Hansen; Marianne Rasmussen ABSTRACT Hearing is vital for birds as they rely on acoustic communication with parents, mates, chicks and conspecifics. Amphibious seabirds face many ecological pressures, having to sense cues in air...

... Department, U.S. Naval Ordnance Laboratory . Chapman , C. J. and Hawkins , A. D. ( 1973 ). A field study of hearing in the cod, Gadus morhua L . J. Comp. Physiol.   85 , 147 - 167 . 10.1007/BF00696473 Coffin , A. B. , Mohr , R. A. and Sisneros , J. A. ( 2012...

... wave at frequencies within the frequency range of hearing by fishes. We compared the acceleration at points on the sagitta, asteriscus and lapillus when the bladder was air filled with results from models using a water-filled bladder. For larvae of 8.5–18 mm in standard length, the air-filled bladder...

..., 2009b ; Bose et al., 2018 ). Reproductive females rely on their sense of hearing to identify and locate conspecific ‘singing’ males. Females exhibit a number of reproductive state-dependent changes in their auditory systems that enhance their ability to detect potential mates. Sisneros and Bass (2003...

.... Note also that at most frequencies, ratios were greater at the lower sound level of 50 dB SPL. Finally, a prediction was derived from these data about the ITDs that the chicken should hear when a sound source originates in the free field from 90 deg to one side. For this, a value for the maximal...

...Alexandra V. Batchelor; Rachel I. Wilson ABSTRACT Drosophila melanogaster hear with their antennae: sound evokes vibration of the distal antennal segment, and this vibration is transduced by specialized mechanoreceptor cells. The left and right antennae vibrate preferentially in response to sounds...

... been used effectively to assess moth hearing ( Coro and Kössl, 1998 ; Mora et al., 2013 ), but it is currently unknown how these values correspond with the number of action potentials produced by cells, so DPOAEs could not be used to address the objectives of our study. Sound pulses were...

...Maria Wilson; Jens Ådne Rekkedal Haga; Hans Erik Karlsen ABSTRACT Attacks by aquatic predators generate frontal water disturbances characterised by low-frequency gradients in pressure and particle motion. Low-frequency hearing is highly developed in cephalopods. Thus, we examined behavioural...

... by utilizing the swimbladder or pectoral fins. On land, vertebrates pick up sounds with light tympana, whereas other mechanisms have had to evolve underwater. Furthermore, fishes differ from all other vertebrates by not having an inner ear end organ devoted exclusively to hearing. Comparing acoustic...

...Michael S. Reichert; Gerlinde Höbel ABSTRACT Sensory receptors transmit information on multiple stimulus dimensions. Much remains to be understood about how the processing of different signal characteristics is partitioned and integrated in different areas of the nervous system. Amphibian hearing...

...Vladimir V. Popov; Evgeniya V. Sysueva; Dmitry I. Nechaev; Viatcheslav V. Rozhnov; Alexander Ya Supin ABSTRACT The negative impact of man-made noise on the hearing of odontocetes has attracted considerable recent attention. In the majority of studies, permanent or temporary reductions...

... discrimination of individual calls from background noise. We used auditory evoked potentials to investigate the effects of forward masking on the responses to artificial calls in male and female treefrogs ( Hyla cinerea ), as well as whether hearing advertisement calls over several nights, as happens in natural...

...Paul E. Nachtigall; Alexander Ya Supin; Adam B. Smith; Aude F. Pacini ABSTRACT The hearing sensitivity of a bottlenose dolphin for a warning sound, when the exact time of the arrival of a loud sound could or could not be predicted, was measured. Sensitivity was measured when the time of onset...

... between vocal–motor control and saccular sensitivity in toadfish. Hearing Vocal differentiation Acoustic communication Ontogeny Batrachoididae A fundamental question for all vocal communication systems concerns the relationship between the developmental processes of vocal differentiation...

...Jillian M. Sills; Brandon L. Southall; Colleen Reichmuth ABSTRACT Ringed seals ( Pusa hispida ) are semi-aquatic marine mammals with a circumpolar Arctic distribution. In this study, we investigate the amphibious hearing capabilities of ringed seals to provide auditory profiles for this species...