Audiotry System

Question 1

Stimulus

Answer 1

Sound

Question 2

Sound

Answer 2

Frequency of spectrum

Question 3

Amplitude/Frequency

Answer 3

Amplitude: difference between pressure
Frequency: Numbers of wave that pass a certain pint in a given time frame (amount of oscillation)

Question 4

Anatomy of the Ear

Answer 4

Outer Ear
Middle Ear
Inner Ear

Question 5

Outer Ear

Answer 5

• hearing
  Pinna (catching sound waves)
  Outer auditory canal endig with ear drum

Question 6

Middle Ear

Answer 6

-hearing
Tympanic cave with auditory ossicle
Hammer connected with ear drum
Oval window passage to inner ear

Question 7

Inner Ear

Answer 7

-key to hearing/ maintaining equilibrium
Filled with fluid
2 Muscles to regulate sound stimuli from middle ear
Labyrinth: balance and hearing (cochlea)

Question 8

Cochlea

Answer 8

Reissner membrane (separating Scala vestibuli/ media)
Basillar-membrane (separating Scala media/tympani)
Corti organ in Scala media

Question 9

Corti-organ

Answer 9

Generating AP from pressure wave
3 seq. outer and 1 seq. inner hair cells
Hair cells moving as bundles connected to tip links
Longest hair connected to tectorial membrane

Question 10

Sound transduction by Corti-organ

Answer 10

Upwards: Depolarisation of inner/outer hair cells, AP
Downwards: Repolarisation
Inner: Secretion of transmitter
Outer: Reinforcement

Question 11

Coding Sound Frequency

Answer 11

Sound Wave along Scala media (Tonotopy)
Maxima of oscillation depending on frequency
Resonance = maximal amplitude