Hearing: Physiology and Psychoacoustics

Select the BEST response alternative for each of the questions below.

1. The term ________ refers to the psychological aspect of sound related mainly to the fundamental frequency.
A) loudness
B) pitch
C) frequency
D) intensity
E) tone
2. The lowest-frequency component of a complex period sound is its:
A) phase.
B) amplitude.
C) bass.
D) treble.
E) fundamental frequency.
3. One of the roles of the ossicles is to:
A) amplify sounds.
B) prevent the cochlea from vibrating.
C) transmit sound waves back to the environment.
D) protect the ear canal.
E) All of the above.
4. What is the correct order of the vibrations from the eardrum as they pass through the ossicles?
A) Incus, malleus, stapes
B) Incus, stapes, malleus
C) Malleus, incus, stapes
D) Malleus, stapes, incus
E) Stapes, incus, malleus
5. Vibrations transmitted through the tympanic membrane and middle-ear bones cause the ________ to push and pull the flexible window in and out of the vestibular canal at the base of the cochlea.
A) helicotrema
B) basilar membrane
C) round window
D) stapes
E) pinna
6. The acoustic reflex protects the ear from intense sounds by:
A) transmitting only low-frequency sounds to the brain.
B) contraction of the stapedius and tensor tympani muscles.
C) opening the oval window to transmit vibration.
D) transmitting loud noises back to the ear canal.
E) stiffening the round tympanic membrane.
7. The organ of Corti is a structure on the basilar membrane composed of ________ and dendrites of auditory nerve fibers.
A) hair cells
B) tiny bones
C) fluid-filled chambers
D) muscles
E) mucous
8. The phenomenon known as two-tone suppression occurs when:
A) a second tone of a slightly different frequency is added to the first tone.
B) three tones are heard together.
C) the hair cells are not tuned properly to the particular frequencies heard.
D) several tones are heard at the same time.
E) any more than two tones cannot be heard.
9. The ________ refers to a graph that plots the firing rate of an auditory nerve fiber in response to a sound of a constant frequency at increasing intensities.
A) threshold tuning curve
B) frequency tuning curve
C) relative amplitude function
D) spike histogram
E) rate-intensity function
10. What is the correct order for the structures through which sound information is transferred from the cochlea to the auditory cortex?
A) Medial geniculate nucleus, superior olive, inferior colliculus.
B) Medial geniculate nucleus, inferior colliculus, superior olive.
C) Superior olive, medial geniculate nucleus, inferior colliculus.
D) Superior olive, inferior colliculus, medial geniculate nucleus.
E) Inferior colliculus, medial geniculate nucleus, superior olive.
11. The primary auditory cortex (A1) is organized in a ________ manner.
A) center-surround
B) topographic
C) tonotopic
D) rows-and-columns
E) retinotopic
12. The first area within the temporal lobes, which is responsible for processing acoustic information is called the:
A) lateral auditory cortex.
B) medial auditory cortex.
C) belt area.
D) parabelt area.
E) primary auditory cortex.
13. The belt area has neurons that respond to:
A) simple characteristics of sound.
B) more complex characteristics of sound.
C) particular frequencies.
D) low frequencies only.
E) language.
14. Which of the following is not a cause of hearing loss?
A) Otitis media.
B) Use of ototoxic drugs.
C) Excessive exposure to noise.
D) Masking.
E) Otosclerosis.
15. This type of hearing loss is due to chemicals, such as antibiotics, or cancer drugs that kill hair cells in the inner ear.
A) Otosclerosis.
B) Ototoxic.
C) Sensorineural.
D) Ottitis media.
E) None of the above.

End of Quiz!

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