Exact(1)
We provide here two application examples, although we note that strictly speaking, these do not represent a census of animals because we need multipliers (e.g. accounting for group size, or proportion of time producing sounds) to produce actual animal density estimates from sound detections.
Similar(59)
Some species also have an "indirect" pathway for sound detection, where acoustic pressure is detected by the swim bladder, but this signal is still mediated by the otoliths16,25.
Sound detection is possible with laminar streams that can be made sensitive to certain sound frequencies.
Chen, F. et al. A differentially amplified motion in the ear for near-threshold sound detection.
Popper, A. N. & Fay, R. R. Rethinking sound detection by fishes.
An example is the hydrophone, which responds to waterborne sound waves and is useful in underwater sound detection.
One of the extraordinary features of the mammalian sound detection system is the range over which it works.
Here we identify wind-sensitive neurons in Johnston's organ, an antennal mechanosensory structure previously implicated in near-field sound detection (reviewed in refs 5 and 6).
Mooney, T. A. et al. Sound detection by the longfin squid (Loligo pealeii) studied with auditory evoked potentials: sensitivity to low-frequency particle motion and not pressure.
Results showed that tonal components in the low-frequency range were highly correlated with the sound detection.
Using this approach, tested extensively in guinea pigs and chinchillas, Dr. Kopke's group treats delicate hair cells within the ear, key components in sound detection, with antioxidant drugs to counteract toxic compounds generated by injury.
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