1 Exampromax - Stuvia US
PSYC 230 UIUC Exam #2 Questions and
Answers 100% Correct Answers Already
Graded A+
Q: Sound stimulus
Ans: the periodic variations in air pressure traveling out from the source
Q: Sound waves
Ans: the waves of pressure changes that occur in the air as a function of the
vibration of a source
Exampromax - Stuvia US
Q: Medium of sound
Ans: A material (solid, liquid, or gas, or combination of these) through which a
wave travels. In water, sound travels 4x faster than it does through air.
Q: pure tones
Ans: A sound wave in which changes in air pressure follow a sine wave pattern.
Q: amplitude
Ans: the difference between the peak and the baseline of a wave (height of
wave).
Q: loudness
Ans: Perceptual experience of amplitude
Q: Loud sounds can be dangerous
Ans: Prolonged contact to sounds over 85 dB can eventually cause hearing loss.
Sounds louder than 120 dB are painful. Sounds louder than 130 dB will generally
result in immediate and permanent hearing loss.
Q: Frequency
, 2 Exampromax - Stuvia US
Ans: The number of cycles in a sound stimulus that occur in 1 second
Q: Pitch
Ans: The subjective experience of frequency
Q: what unit is used to measure sound amplitude?
Ans: Hertz (Hz)
Q: What is the hearing range of humans and how does it change with age?
Ans: 20-20,000 Hz. As people age, hearing in the highest range dissipates.
Lowest frequencies tend to remain stable with age.
Q: Outer ear
Exampromax - Stuvia US
Ans: Pinna, external auditory canal, tympanic membrane (eardrum)
Q: Pinna
Ans: Collects sound and funnels it into the auditory canal
Q: External auditory canal
Ans: conducts sound to the tympanic membrane, amplifies specific sound
frequencies.
Q: Tympanic membrane (eardrum)
Ans: Thin elastic sheet.
Q: Middle ear
Ans: Eustachian tube
Tensor tympani
Stapedius
Ossicles:
Malleus (hammer)
Incus (anvil)
Stapes (stirrup)
Q: Eustachian tube
, 3 Exampromax - Stuvia US
Ans: Connects the middle ear with the pharynx. Equalizes air pressure on either
side of the eardrum
Q: Tensor tympani and Stapedius
Ans: Muscles attached to the malleus and stapes
Q: Incus (anvil)
Ans: The middle bone which is connected to the malleus and hammer, passes
vibrations onto the stapes.
Q: Ossicles
Ans: 3 small bones in the middle ear that conduct sound mechanically, goal is to
amplify sounds
Exampromax - Stuvia US
Q: Malleus (hammer)
Ans: Affixed to the tympanic membrane and acts on the incus
Q: Stapes (stirrups)
Ans: Vibrates against oval window creating pressure waves leading to
transduction by hair cells on basilar membrane in cochlea
Q: Inner ear
Ans: functions: transduce sound into a neural signal
Q: Cochlea
Ans: Snail-shaped structure of the inner ear that houses the hair cells that
transduce sound into a neural signal.
Q: Tympanic canal
Ans: One of three fluid-filled chambers in the cochlea. Vibrations travel down it.
Q: Middle canal
PSYC 230 UIUC Exam #2 Questions and
Answers 100% Correct Answers Already
Graded A+
Q: Sound stimulus
Ans: the periodic variations in air pressure traveling out from the source
Q: Sound waves
Ans: the waves of pressure changes that occur in the air as a function of the
vibration of a source
Exampromax - Stuvia US
Q: Medium of sound
Ans: A material (solid, liquid, or gas, or combination of these) through which a
wave travels. In water, sound travels 4x faster than it does through air.
Q: pure tones
Ans: A sound wave in which changes in air pressure follow a sine wave pattern.
Q: amplitude
Ans: the difference between the peak and the baseline of a wave (height of
wave).
Q: loudness
Ans: Perceptual experience of amplitude
Q: Loud sounds can be dangerous
Ans: Prolonged contact to sounds over 85 dB can eventually cause hearing loss.
Sounds louder than 120 dB are painful. Sounds louder than 130 dB will generally
result in immediate and permanent hearing loss.
Q: Frequency
, 2 Exampromax - Stuvia US
Ans: The number of cycles in a sound stimulus that occur in 1 second
Q: Pitch
Ans: The subjective experience of frequency
Q: what unit is used to measure sound amplitude?
Ans: Hertz (Hz)
Q: What is the hearing range of humans and how does it change with age?
Ans: 20-20,000 Hz. As people age, hearing in the highest range dissipates.
Lowest frequencies tend to remain stable with age.
Q: Outer ear
Exampromax - Stuvia US
Ans: Pinna, external auditory canal, tympanic membrane (eardrum)
Q: Pinna
Ans: Collects sound and funnels it into the auditory canal
Q: External auditory canal
Ans: conducts sound to the tympanic membrane, amplifies specific sound
frequencies.
Q: Tympanic membrane (eardrum)
Ans: Thin elastic sheet.
Q: Middle ear
Ans: Eustachian tube
Tensor tympani
Stapedius
Ossicles:
Malleus (hammer)
Incus (anvil)
Stapes (stirrup)
Q: Eustachian tube
, 3 Exampromax - Stuvia US
Ans: Connects the middle ear with the pharynx. Equalizes air pressure on either
side of the eardrum
Q: Tensor tympani and Stapedius
Ans: Muscles attached to the malleus and stapes
Q: Incus (anvil)
Ans: The middle bone which is connected to the malleus and hammer, passes
vibrations onto the stapes.
Q: Ossicles
Ans: 3 small bones in the middle ear that conduct sound mechanically, goal is to
amplify sounds
Exampromax - Stuvia US
Q: Malleus (hammer)
Ans: Affixed to the tympanic membrane and acts on the incus
Q: Stapes (stirrups)
Ans: Vibrates against oval window creating pressure waves leading to
transduction by hair cells on basilar membrane in cochlea
Q: Inner ear
Ans: functions: transduce sound into a neural signal
Q: Cochlea
Ans: Snail-shaped structure of the inner ear that houses the hair cells that
transduce sound into a neural signal.
Q: Tympanic canal
Ans: One of three fluid-filled chambers in the cochlea. Vibrations travel down it.
Q: Middle canal
