WK1 L1 Introduction and psychophysics

Question 1

2 main approaches to studying perception

Answer 1

psychophysical and physiological

Question 2

Psychophysical approach

Answer 2

the stimulus-perception relationship

Question 3

physiological approach

Answer 3

The stimulus physiology relationship, the physiology perception relationship

Question 4

7 steps to perception

Answer 4

1-2 stimuli, 3-4 physiology, 5-7 perception- behavioural responses, prception-recgonition-action

Question 5

3 relationships measured to study the perceptual process

Answer 5

psychophysical- between stimuli and perception, physiological- between stimuli and physiology, between physiology and perception

Question 6

psychophysics

Answer 6

the study of the relationship between the physical stimulus and the observer’s perceptual response to that stimulus

Question 7

classic psychophysical methods

Answer 7

method of limits, method of constant stimuli, method of adjustment

Question 8

method of thresholds

Answer 8

absolute and difference threshold

Question 9

absolute threshold

Answer 9

the smallest amount of energy needed to detect a stimulus

Question 10

difference threshold

Answer 10

the minimum difference that can be detected between two stimuli

Question 11

method of limits

Answer 11

stimuli of different intensities are presented in ascending or descending order

Question 12

method of constant stimuli

Answer 12

five to nine stimuli of different intensities are presented in random order

Question 13

psychometric function

Answer 13

describes the probability of observers correctly detecting stimulus presence

Question 14

method of adjustment

Answer 14

stimulus intensity is adjusted continuously until the observer detects it