A

Question 1

Why is sound localisation important?

Answer 1

• Survival
• Communication
• Gaining a perception of auditory space

Question 2

Binaural hearing

Answer 2

Sound enters both ears and a 3D map is created of the sounds around you

Question 3

Monaural hearing

Answer 3

Sound enters through one ear. The sounds of objects condense into one side.

Question 4

In what plane do monoaural cues locate sound?

Answer 4

Vertical plane (is the sound coming from above or below?)

Question 5

In what plane do binaural cues locate sound?

Answer 5

Horizontal plane/azimuth (is the sound coming from left, right or centre?)

Question 6

DEFINE: Interaural timing differences

Answer 6

Difference in arrival time of the same sound between the 2 ears

Question 7

What sounds are ITDs used to localise?

Answer 7

Low frequency sounds = 100Hz - 3KHz

Question 8

DEFINE: Interaural level differences

Answer 8

Difference in intensity of the same sound at the two ears

Question 9

What sounds are ILDs used to localise?

Answer 9

High frequency sounds = 4-18 KHz

Question 10

Where does sound localisation occur?

Answer 10

Superior olivary complex (in the brainstem)

Question 11

What is phase resetting?

Answer 11

resetting rhythmic brain oscillations occurring at different frequencies. important for associating multisensory information during selective attention