Sensorineural hearing impairment

a) Consider a patient who has been exposed to an ototoxic drug that has caused the death of the outer hair cells in the cochlea but has left the inner hair cells unaffected. What sort of hearing loss is the person likely to experience and what sort of hearing device could assist them? Explain the reasons for your answer based upon how the inner ear functions. b) Consider a person who has a partial loss of myelin in their auditory nerve. What effect would the loss of myelin have upon the ability of this person to perceive speech and would either a hearing aid or cochlear implant provide any benefit to their hearing ability? Explain the reasons for your answer based upon how the inner ear and auditory pathway function. I c) Explain the difference in information that can be provided by a cochlear implant consisting of a single electrode compared to a cochlear implant with many electrodes. What type of neural code is provided in each case? What type of musical sounds could be well…

Label the following numbers: 31, 32 & 37 of the inner ear (B) and cochlea in transverse position (C)

which statements are true about the Auditory Structures and Functions a. The external ear consists of the auricle and external acoustic meatus.  b. The middle ear connects the external and inner ears. The tympanic membrane is stretched across the external acoustic meatus.  c. The malleus, incus, and stapes connect the tympanic membrane to the oval window of the outer ear. d. The auditory tube connects the middle ear to the pharynx and functions to equalize pressure.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement. a. The incus is connected to the tympanic membrane. b. The stapes is attached to the oval window. c. The auditory canal is separated from the middle ear by the round window. d. The cochlear duct is filled with perilymph. e. The semicircular ducts are connected to the utricle, and the cochlear duct is continuous with the saccule. f. The spiral organ is located in the scala tympani.

You are experiencing some hearing loss. You don’t work with loud machinery or go to loud concerts. But, you do work in a busy smoothie bar, so have regular exposure to a loud blender. The ear doctor tells you that although blenders are only moderately loud, frequent exposure to sound levels greater than _______ (like the blender) has most likely caused damage to the cochlear hairs that produce those sounds.     75 dB     95 dB     125 dB     150 dB     175dB

Presbycusis is an age-related hearing loss affecting individuals over the age of 65. Many affected individuals have difficulty understanding words because, although they may be able to hear the sound, they are unable to distinguish the exact words. This hearing loss is most noticeable at higher frequencies. Which of the following statements correctly describes an individual suffering from presbycusis? Select one: a. Individuals with presbycusis have damaged hair cells at the base of the cochlea, which is closest to the oval window. b. Increasing the volume of higher frequency sound allows individuals affected with presbycusis to hear better. O c. Individuals with presbycusis have damaged hair cells at the apex of the cochlea, which is farthest from to the oval window. Od. Decreasing the amplitude of lower frequency sound allows individuals affected with presbycusis to hear better.

(Human physiology) Hearing B is characterized by conductive hearing loss caused by an ear infection or blockage that interferes with the transmission of sound to the inner ear.Why does this patient hear bone conduction sound with lower intensity than other patients? (Should this disease reduce the sensitivity of sound perception?) Between A, C and D, which patients had neurological hearing damage causing overall reduction in hearing acuity and which patients had damage caused by an air horn? Why? (sorry for my bad english)

Cochlear implants are devices that can be used to restore hearing in some individuals. The implant stimulates the cochlearnerve through electrical impulses. Why are cochlear implants not ideal for all types of hearing loss?

Table 1 below shows the threshold for hearing in the left ear of three students at the indicated range of frequencies. Draw the pure tone audiogram for the three students on a single graph with the scales as illustrated below. Comment on the reasons for the shape of the graph for student 2 and 3. Frequency in Hertz (Hz) 125 250 500 1000 2000 4000 8000 -10 10 30 70 06 110 Hearing Level in dB 4.