Psychophysics Flashcards
1
Q
What is psychophysics?
A
Examining the relationship between the physical stimulus and the participant’s subjective experience of the stimulus
2
Q
What is an absolute threshold?
A
Minimum stimulus energy necessary for an observer to detects a stimulus.
3
Q
What is a difference threshold?
A
Minimum detectable difference between two stimuli (JND)
4
Q
What is signal detection theory?
A
Detection of a signal depends both on the
participant’s sensitivity to the signal and on the participant’s response bias
5
Q
State Feschner’s law
A
s (subjective response) = c log I (intensity of stimulus)
6
Q
State Weber’s law
A
c = (difference in I)/(original I)
