It's a disorienting experience, which is aided by the production production which makes the guitars feel like they're trying to burrow in (or maybe out?) of your tympanic membranes.
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Crocodiles can hear well; their tympanic membranes are concealed by flat flaps that may be raised or lowered by muscles.
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The most prominent feature is the pair of dorsolateral folds extending from behind the tympanic membranes to just beyond halfway down the back. The male's single vocal sac is internal. When it calls, the throat swells, but the vocal sac is not visible.
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Pakicetids could hear under water, using enhanced bone conduction, rather than depending on tympanic membranes like most land mammals. This arrangement does not give directional hearing under water. Ambulocetus natans, which lived about 49 million years ago, was discovered in Pakistan in 1994. It was probably amphibious, and looked like a crocodile.
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The Arabian toad has a rounded head and snout, prominent eyes and small tympanic membranes. Its back is covered with small warts and it varies in colour, being grey, tan, brown or green, often with golden speckles. The male is generally smaller than the female. The long croak of the male sounds like a rusty door hinge.
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Their descendants, the therapsids (including mammalian ancestors), probably had tympanic membranes in contact with the quadrate bones. The stapes remained in contact with the quadrate bone, but functioned as auditory ossicles rather than supports for the brain case. As a result, the quadrate bones of therapsids likely had a dual function in both the jaw joint and auditory system.
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The Kihansi spray toad is a small, sexually dimorphic anuran, with females reaching up to long and males up to . The toads display yellow skin coloration with brownish dorsolateral striping. They have webbed toes on their hind legs, but lack expanded toe tips. They lack external ears, but do possess normal anuran inner ear features, with the exception of tympanic membranes and air-filled middle ear cavities.
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The tympanic membranes of opposite ears are directly connected mechanically, allowing resolution of nanosecond time differencesMiles RN, Robert D, Hoy RR. Mechanically coupled ears for directional hearing in the parasitoid fly Ormia ochracea. J Acoust Soc Am. 1995 Dec;98(6):3059-70. Robert D, Miles RN, Hoy RR. Directional hearing by mechanical coupling in the parasitoid fly Ormia ochracea. J Comp Physiol [A]. 1996;179(1):29-44.
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Both sexes are equipped with a sensitive tympanic hearing organ that allows the great wax worm to perceive high frequency sound. This likely resulted from selective pressure from insectivorous bats; being able to detect their echolocation would enable G. mellonella to avoid being eaten. Female tympanic membranes are 0.65 mm across; males’ are 0.55 mm across. They are located on the ventral side of the first abdominal segment.
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A small percentage of children acquire HHV-6 with few signs or symptoms of the disease. Children with HHV-6 infection can also present with miringitis (inflammation of the tympanic membranes), upper respiratory symptoms, diarrhea, and a bulging fontanelle. In addition, children can experience pharyngitis with lymphoid hyperplasia seen on the soft palate and swelling of the eyelids. These symptoms usually present during the febrile phase of roseola.
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The new right-sided hemorrhage was centered on the posterior putamen with surrounding edema involving the posterior portion of the posterior limbs of the internal, external, and extreme capsules. Signal abnormalities extended into the right temporal lobe. The patient had no other neurologic deficits and spoke fluently, although with poor internal volume control of her voice. Otoscopic examination revealed normal-appearing external auditory canals, intact tympanic membranes bilaterally, and normal middle ear anatomy.
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Surface rendering of the head of the frog Atelopus franciscus, with ear parts highlighted. Frogs can hear both in the air and below water. They do not have external ears; the eardrums (tympanic membranes) are directly exposed or may be covered by a layer of skin and are visible as a circular area just behind the eye. The size and distance apart of the eardrums is related to the frequency and wavelength at which the frog calls.
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Restoration Stenonychosaurus had one of the largest known brains of any dinosaur, relative to its body mass (comparable to modern birds). This has been calculated as a cerebrum-to-brain- volume ratio 31.5% to 63% of the way from a non-avian reptile proportion to a truly avian one. Additionally, it had bony cristae supporting their tympanic membranes that were ossified at least in their top and bottom regions. The rest of the cristae were either cartilaginous or too delicate to be preserved.
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The jaws of early synapsids, including the ancestors of mammals, were similar to those of other tetrapods of the time, with a lower jaw consisting of a tooth-bearing dentary bone and several smaller posterior bones. The jaw joint consisted of the articular bone in the lower jaw and the quadrate in the upper jaw. The early pelycosaurs (late Carboniferous and early Permian) likely did not have tympanic membranes (external eardrums). Additionally, their massive stapes bones supported the braincase, with the lower ends resting on the quadrates.
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Moths are known to engage in acoustic forms of communication, most often as courtship, attracting mates using sound or vibration. Like most other insects, moths pick up these sounds using tympanic membranes in their abdomens. An example is that of the polka-dot wasp moth (Syntomeida epilais), which produces sounds with a frequency above that normally detectable by humans (about 20 kHz). These sounds also function as tactile communication, or communication through touch, as they stridulate, or vibrate a substrate like leaves and stems.
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The Crambidae are the grass moth family of (butterflies and moths). They are quite variable in appearance, the nominal subfamily Crambinae (grass moths) taking up closely folded postures on grass-stems where they are inconspicuous, while other subfamilies include brightly colored and patterned insects which rest in wing-spread attitudes. In many classifications, the Crambidae have been treated as a subfamily of the Pyralidae or snout-moths. The principal difference is a structure in the ears called the praecinctorium, which joins two tympanic membranes in the Crambidae, and is absent from the Pyralidae.
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The Crambidae are the grass moth family of lepidopterans. They are variable in appearance, the nominal subfamily Crambinae (grass moths) taking up closely folded postures on grass stems where they are inconspicuous, while other subfamilies include brightly coloured and patterned insects which rest in wing-spread attitudes. In many classifications, the Crambidae have been treated as a subfamily of the Pyralidae or snout-moths. The principal difference is a structure in the ears called the praecinctorium, which joins two tympanic membranes in the Crambidae, and is absent from the Pyralidae.
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Thus, a bird's lungs receive a constant supply of fresh air during both inhalation and exhalation. Sound production is achieved using the syrinx, a muscular chamber incorporating multiple tympanic membranes which diverges from the lower end of the trachea; the trachea being elongated in some species, increasing the volume of vocalisations and the perception of the bird's size. In birds, the main arteries taking blood away from the heart originate from the right aortic arch (or pharyngeal arch), unlike in the mammals where the left aortic arch forms this part of the aorta. The postcava receives blood from the limbs via the renal portal system.
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The tiny parasitic fly Ormia ochracea has become a model organism in sound localization experiments because of its unique ear. The animal is too small for the time difference of sound arriving at the two ears to be calculated in the usual way, yet it can determine the direction of sound sources with exquisite precision. The tympanic membranes of opposite ears are directly connected mechanically, allowing resolution of sub-microsecond time differences and requiring a new neural coding strategy. Ho showed that the coupled-eardrum system in frogs can produce increased interaural vibration disparities when only small arrival time and sound level differences were available to the animal's head.
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Male Southern elephant seal Southern elephant seals (Mirounga leonina) can dive as deep as 2000 m and stay underwater for as long as 120 min, which means that they are subjected to hydrostatic pressures of more than 200 atmospheres, but hydrostatic pressure is not a major problem, as at depths below about 100 m, depending on the species, the lungs and other air spaces have collapsed and for practical purposes, the animal will be incompressible, so that further increases in depth pressure no longer have much effect. The tympanic membranes of the deep- diving hooded seal are protected by the cavernous tissue in the middle ear, which expands to fill the air space. At great depths the animal must also avoid the narcotic effects of extreme tissue nitrogen tension, oxygen poisoning and similar effects. The collapse of the lungs under pressure has an advantage, as because the airways are reinforced with more cartilage than usual, which extends to the openings of the alveolar sacs, the alveoli will collapse first under pressure which pushes the alveolar air into the airways where there is no gas exchange, and this reduces the nitrogen loading of the tissues to only part of a single breath per dive.
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