Lecture 23: Auditory perception 2 Flashcards

(10 cards)

1
Q

Hair cells sit in rows on the

A

basilar membrane

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2
Q

We have approximately _______ inner

hair cells and ______ outer hair cells

A

3,500; 20,000

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3
Q

Difference between inner (1) and outer (3) hair cells?

A

Outer: moves tectorial membrane to trigger inner hair cells
1 column of inner hair cells

Inner: 95% go up auditory nerve to the brain (5% outer)
3 column of inner hair cells

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4
Q

the change from physical

energy to electrochemical energy

A

transduction

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5
Q

The moving roof triggers _________ to send signals along the ____________.

A

inner hair cells; auditory nerve

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6
Q

What is the place code?

A

Frequency localised on how close to the base of basilar membrane

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7
Q

When does place code theory hold up?

A

High frequencies above 800Hz.

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8
Q

What is phase locking?

A

Spikes the same time as peaks of frequencies

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9
Q

Auditory nerve connected to inner hair cell tends to fire

at the __________ of the stimulating waveform.

A

same phase

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10
Q

When does phase locking theory hold up?

A

Low frequencies below 1-2kHz

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