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What is hearing?
What is hearing?
First it begins with the perception of sound. This process, in its most fundamental form, is the conversion of mechanical vibrations into electrical signals. Hearing can also be defined through the perception of sound, pressure waves in a medium- molecules of air, water, or matter knocking into each other in a patterned way. Yet, hearing can be composed of two philosophical aspects: sound itself and the organism that distinguishes the physical phenomenon in the form of a perception.
Hearing Link. “Causes of Hearing Loss.” Hearing Link Services, 26 Apr. 2022, www.hearinglink.org/your-hearing/causes-hearing-loss.
Evolution of Hearing
Evolution of Hearing
Some form of hearing has existed in organisms for at least 500 million years (Duarte et al., 2021) and insight into the evolution of hearing also gives valuable insight into the behaviors and lifestyles of these species. Within the scope of this website, otic evolution will be examined for classes within Kingdom Animalia, including insects, fishes, reptiles & birds, and mammals. This list of animals only includes Vertebrates and some Arthropods, the only known organisms with recognized hearing capabilities (Dzombak, 2021). It should be noted that while still classified as “non-hearing” in the traditional sense, recent evidence has shown that some Mollusks and Cnidarians can detect, respond to, and be affected by sounds within specific frequency ranges (Sole et al., 2016; Charifi et al., 2017).
Duarte, Carlos M., et al. "The Soundscape of the Anthropocene Ocean." Science, Science, 5 Feb. 2021, https://www.science.org/doi/10.1126/science.aba4658.
Anatomy
Anatomy
About the Authors
About the Authors
Jack Bedolla (jack.bedolla@utexas.edu) - figure and animation design
Zoe Meyer (meyerzoe@utexas.edu) - research over insects and mammals
Rebecca Raphael (raphaelr@utexas.edu) - research over reptiles, birds, and fish
Macy Taylor (macystaylor@utexas.edu) - website formation and design
References
Charifi, Mohcine, et al. “The Sense of Hearing in the Pacific Oyster, Magallana Gigas.” PLOS ONE, Public Library of Science, 25 Oct. 2017, https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0185353. Dzombak, Rebecca. “Tiny Worms 'Hear' without an Eardrum, Surprising Scientists.” Animals, National Geographic, 5 Oct. 2021, https://www.nationalgeographic.com/animals/article/these-worms-hear-with-their-whole-bodies-a-first-in-nature. Duarte, Carlos M., et al. “The Soundscape of the Anthropocene Ocean .” Science, Science, 5 Feb. 2021, https://www.science.org/doi/10.1126/science.aba4658. Solé, Marta, et al. “Evidence of Cnidarians Sensitivity to Sound after Exposure to Low Frequency Noise Underwater Sources.” Nature News, Nature Publishing Group, 21 Dec. 2016, https://www.nature.com/articles/srep37979.
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