PSYCH 1X03 Lecture Notes - Tonotopy, Extrastriate Cortex, Cochlear Nucleus
19 Feb 2013
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Psych 1xx3 audition notes mar 18, 2010. Auditory mechanisms vary across different species according to specific needs. One way that the hearing abilities of various species differ is the range of frequencies that can be detected. Blowing a dog whistle: you know that blowing the whistle doesn"t produce any audible sound to your own ears, but you will certainly have a dog s attention! The dog whistle produces a sound at a high frequency that is beyond the range of human ears but well within the range of the dog"s auditory system. Humans can perceive sounds that lie anywhere between 20 and 20,000 hz, a respectable auditory range. Relatively speaking, whales, dolphins and dogs have a wider hearing range, while frogs and birds have a much narrower range of frequencies that they can detect. At the lower frequency detection extreme are fish, while at the higher frequency detection extreme are bats and rodents.
