The Structure of Inner Ear The inner ear is the essential part of the organ of hearing‚ receiving the ultimate distribution of the auditory nerve. It also called the labyrinth. Inner ear consists of two parts: the osseous labyrinth‚ a series of cavities within the petrous part of the temporal bone‚ and the membranous labyrinth‚ a series of communicating membranous sacs and ducts‚ contained within the bony cavities. The osseous (or bony) labyrinth: Bony labyrinth is the rigid outer wall of
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Exercise 25 Special Senses: Hearing and Equilibrium Answers to Pre-Lab Quiz (pp. 383–384) 1. three 2. a‚ auricle 3. tympanic membrane 4. d‚ stapes 5. a‚ cochlea 6. otoscope 7. b‚ Rinne 8. b‚ internal ear 9. macula/vestibule 10. c‚ involuntary trailing of eyes in one direction‚ then rapid movement in the other Answers to Activity Questions Activity 4: Conducting Laboratory Tests of Hearing (pp. 387–388) Acuity Test The threshold is indefinite. Sound Localization No‚ the sound is less easily located
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improve ability to hear sounds and interact with the environment. Recipients can hear speech‚ telephones‚ and may be able to listen and enjoy music. The surgical procedure is outpatient and takes only a couple hours. After the surgical site heals‚ the auditory processor (external piece) is placed and will begin transmission of sound information. Cochlear implants work best for adults who have lost their hearing recently and have already learned speech and language. Those who are eligible should be fully
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com/02-Journals/JHE/JHE-16-0-000-000-2004-Web/JHE-16-3-151-226-2004-Abst-PDF/JHE-16-3-181-187-2004-1160-Singh-N/JHE-16-3-181-187-2004-Singh-N.pdf Stansfeld‚ S.‚ Matheson‚ M. (2003). Noise pollution: non-auditory effects on health. Retrieved on July 4th‚ 2014‚ from: http://www.kensingtonassociation.org.au/wp-content/uploads/2013/10/Noise+Pollution_non-auditory+effects+on+health.pdf Vijayalakshmi‚ K.S. (2003). Noise Pollution. Retrieved July 4th‚ 2014‚ from: http://www.yorku.ca/bunchmj/ICEH/proceedings/Vijayalakshmi_KS_ICEH_papers_597to603
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transient loss of function. The sudden change in the rate of vestibular nerve firing creates an acute vestibular imbalance (ie‚ vertigo). The physical distention caused by increased endolymphatic pressure also leads to a mechanical disturbance of the auditory and otolithic organs. Because the utricle and saccule are responsible for linear and translational motion detection (as opposed to angular and rotational acceleration)‚ irritation of these organs may produce nonrotational vestibular symptoms. This
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cells that convert sound vibrations into nerve impulses which are then sent to the brain. Here‚ these impulses are interpreted as meaningful sounds. There are only 15‚000 hair cells to perform this analysis‚ and they pass the information to the auditory
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Noise-induced hearing loss (NIHL) occurs when too much sound intensity is transmitted into and through the auditory system. An acoustic signal from an energy source‚ such as a radio‚ enters into the external auditory canal‚ and is funneled through to the tympanic membrane (eardrum). The tympanic membrane acts as an elastic diaphragm and drives the ossicular chain of the middle ear system into motion. Then the middle ear ossicles
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external microphone and a speech processor to stimulate the auditory nerve through embedded electrodes in the cochlea. The technology helps hearing impaired people who are profoundly deaf and/or have damage to the inner ear or auditory nerve. Position and Type of Energy Transfer Occurring In terms of the position and type of energy transfer occurring‚ cochlear implants were developed to bypass dead hair cells and electrically stimulate the auditory nerve directly. They consist of three main components:
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the path of a sound wave from the time it reaches the pinna to the deflection of the tectorial membrane. In a separate paragraph briefly explain why hearing is mechanical in nature. (5 points) 1. Sound waves vibrate the tympanic membrane. 2. Auditory ossicles vibrate. Pressure is amplified. 3. Pressure waves created by the stapes pushing on the oval window move through fluid in the scala vestibuli. 4a. Sounds with frequencies blow hearing travel through the helicotrema and do not excite
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understanding and interpreting something. However while perception is an unavoidable part of our life‚ it has also been said to encourage racism. It is said to encourage racism through two aspects; visual and auditory perception. Firstly‚ visual perception is our ability to see while auditory perception is our ability to hear. Both are natural abilities that we are born with and we use them on a daily basis but yet‚ it can be a dangerous tool. For example‚ when people see a “black” person‚ they may
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