From Neurons to Psychophysics

Question 1

What does sensory trandsuction do?

Answer 1

Convert physical energy into electrical signals

Question 2

Hoe do receptor potentials code stimulate intesnity?

Answer 2

By gradations in amplitudes - hyper or depolarising

Question 3

What the relationship between range and sensitivity?

Answer 3

Large dynamic range comes at cost of sensitivity to intensity deifferences

Question 4

What is fractionation?

Answer 4

different R with different ranges

Question 5

What is psychophysics?

Answer 5

Measuring sensation and perception by separating conceptualising physical stimulations and associated sensation

Question 6

What is physical intensity?

Answer 6

Power per unit area (Watts per m²)

Question 7

What are the 2 basic approaches to looking at intensity?

Answer 7

Scaling: ordering stimuli along a perceptual dimension

Threshold: measuring limits of sensitivity

Question 8

What is absolute threshold?

Answer 8

The weakest stimulation intensity

Question 9

What is difference threshold?

Answer 9

The smallest difference between 2 stimuli that observers can discriminate - subject to response bias