Re: Bite-induced pitch shift? ("neuronet(at)" )

Subject: Re: Bite-induced pitch shift?
From:    "neuronet(at)"  <neuronet(at)CYBERONIC.COM>
Date:    Fri, 20 Jun 2003 17:07:00 -0400

The following may be of interest: The ears of modern insects are thought to have evolved from stretch or vibration detectors, just from the anatomy and the fact that insects' ears can appear on a wide variety of different body parts. . . . the remarkable hearing organs of a type of tropical grasshopper which, in evolutionary terms, has been around for a long time. Their discovery of the insect's primitive-but-powerful hearing organs confirms that stretch receptors do indeed form the starting point for the evolution of hearing, and shows that these transitional hearing organs are in fact very effective, even though they are a long way from the more complex organs = = = = = As an audiologist working with children who have hearing, listening and/or learning problems, I see a very high number of children who have an unexplained low-frequency air-conduction but not bone-conduction hearing loss. I have always felt that this was due to the limited mobility of the eardrum, secondary to negative middle ear pressure, and a cascade of subsequent events which degraded auditory perception in a language-learning child. Nancy Rowe Nancy W. Rowe, M.S., FAAA

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