Week 5 - Audition

Question 1

The _______ part of the ear, collects sound from a wide area

Answer 1

Pinna

Question 2

Sound wave moves through the ________ membrane

Answer 2

Tympanic

Question 3

The tympanic membrane moves the ___________ (little bones)

Answer 3

Ossicles

Question 4

Ossicles move the membrane at the ________ window

Answer 4

Oval

Question 5

The motion at the oval window moves fluid from the __________

Answer 5

Cochlea

Question 6

Three types of bones in the inner ear are the ______, _______, and ______

Answer 6

Malleus, Incus, and Stapes

Question 7

What part of the ear vibrates in response to sound?

Answer 7

The basilar membrane in the cochlea

Question 8

Stereocilia on top of ___________ (auditory receptors) bend back and forth in response to the flexing of the basilar membrane, causing the transduction of the electrical signal

Answer 8

Hair cells

Question 9

Innervation of hair cells by _______ _________ cells, provide the input to the auditory nerve

Answer 9

Spiral Ganglion

Question 10

Auditory pathway - 1. Auditory receptors in cochlea, 2. Brain stem neurons, 3. ______________, 4. Auditory Cortex

Answer 10

Medial Geniculate Nucleus (MGN) part of the thalamus

Question 11

What number Brodmann’s area can the Primary Auditory Cortex be found?

Answer 11

BA 41 and 42, or A1

Question 12

What lobe can the Primary Auditory Cortex be found in?

Answer 12

The Temporal Lobe (Superior)

Question 13

What type of map shows the schematic organisation of the frequencies of audition in the auditory cortex?

Answer 13

Tonotopic

Question 14

___________ ______ reflect how different sound frequencies are encoded differently throughout the auditory pathway

Answer 14

Tonotopic Maps

Question 15

________ System = Spatial mapping, ________ System = Frequency Mapping

Answer 15

Visual, Auditory

Question 16

What type of animal can hear low frequencies called infrasound, that enables them to communicate over long distances?

Answer 16

Elephants

Question 17

What types of animals can hear high frequencies called ultrasound, that enables them to hear sounds that humans cannot

Answer 17

Bats and Dolphins

Question 18

We are able to localise sounds, by slight __________ in the arrival times at the two ears (and also intensity)

Answer 18

Asymmetries

Question 19

The ___________ Detector allows us to measure the location of sound that hits both our ears

Question 20

Two auditory pathways that correspond to the What and Where, the __________ and the ___________

Answer 20

Postero-dorsal and Antero-ventral

Question 21

The _________ Stream recognises what an object is, as the ___________ Stream recognises where the object is

Answer 21

Ventral, Dorsal