Temporal Processing

Question 1

What is temporal processing?

Answer 1

the auditory systems ability to detect small rapid changes in stimulus or the ordering

Question 2

What two methods have been employed to measure temporal resolution?

Answer 2

temporal discrimination, TMTF (Temporal modulation transfer function)

Question 3

Why is temporal ordering important for speech perception? How is it measured?

Answer 3

important because you need to be able to process speech in order of how it was presented
otherwise you do not understand the conversation

Question 4

Describe and illustrate with a sketch how a
gap detection experiment or test would be
administered.

Answer 4

noises are presented with gaps of silence between them and we are testing for the smallest detectable gap
noise _____________ noise
noise __________ noise
noise ____ noise (over time)

Question 5

What is TMTF

Answer 5

detecting amplitude modulated signals (lower rates = easy detection fast rates = no detection)

Question 6

Auditory system is good at detecting amplitude changes at _______

Answer 6

Low modulation frequencies

Question 7

fast frequency rate we need a ______ modulation depth (amplitude)

Answer 7

deep

Question 8

slow frequency rate we need a _____ modulation depth (amplitude)

Answer 8

shallow

Question 9

Process auditory info in way in which it is received

Answer 9

temporal ordering

Question 10

describe the effects of duration on tonality

Answer 10

Extremely brief sounds will be perceived as a click

Question 11

describe the effects of duration on absolute threshold

Answer 11

Absolute threshold decreases with presentation
during up to 200-300 msec

Question 12

describe the effects of duration on loudness perception

Answer 12

Loudness perception diminishes over sustained
presentation, this is called loudness adaptation,
greater closer to threshold

Question 13

What is temporal integration and how is it relevant for absolute threshold?

Answer 13

ability of the auditory system to integrates and adds info coming in over a short time window

Question 14

What is the minimum presentation length of a pure tone to ensure valid testing?

Answer 14

200 msec

Question 15

modulation depth

Answer 15

amplitude

Question 16

modulation rate

Answer 16

frequency

Question 17

What is it called when the loudness perception diminishes?

Answer 17

adaptation

Question 18

Describe and illustrate with a sketch how a gap detection experiment or test would be administered.

Answer 18

Noises are administered with gaps of silence between them. We want to find the smallest detectable gap of silence

Question 19

Sketch an amplitude modulated signal with two different modulation depths.

Answer 19

see drawing

Question 20

Sketch an amplitude modulated signal with two different modulation rates.

Answer 20

see drawing

Question 21

What is temporal ordering and why is it important for speech perception?

Answer 21

The ability to process multiple auditory stimuli in their order of occurrence
It is important because speech perception involves temporal ordering, speech unfolds over time

Question 22

describe the effects of duration on absolute threshold

Answer 22

Absolute threshold decreases with presentation during up to 200-300 msec

Question 23

describe the effects of duration on tonality perception

Answer 23

Extremely brief sounds will be perceived as a click

Question 24

describe the effects of duration on loudness perception

Answer 24

Loudness perception diminishes over sustained presentation, this is called loudness adaptation, greater closer to threshold.