Lecture 2: Introduction to Auditory System. Sensitivity, Selectivity and Invariance

Question 1

What are the key characteristics for all sensory systems?

Answer 1

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Question 2

How is the auditory system sensitive?

Answer 2

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Question 3

How is the auditory system selective?

Answer 3

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Question 4

How is the auditory system invariant?

Answer 4

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Question 5

What is Sound?

Answer 5

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Question 6

What does the ear decompose a pressure wave into?

Answer 6

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Question 7

What is a Spectrogram? What do the colours represent? What are the axes?

Answer 7

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Question 8

How are the different frequencies differentiated by the ear? What is needed? What is the graph?

Answer 8

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Question 9

How does the level of intensity change needed to activate a detector? What is it dependant on?

Answer 9

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Question 10

Why is natural recognition a hard problem?

Answer 10

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Question 11

What is an example of selectivity and invariance in a single neuron? How does it show selectivity? How does it show invariance?

Answer 11

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Question 12

What must the auditory system be able to do?

Answer 12

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Question 13

What is the pathway from the ear to the auditory cortex? What are the different centres?

Answer 13

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