Receptive Fields and Spatial Discrimination

Question 1

Name the defined area in the periphery over which every receptor can receive input?

Answer 1

RECEPTIVE FIELD

Question 2

Stimuli falling outside the receptive field will be unable to affect what?

Answer 2

RECEPTOR

Question 3

What is the term for the ability to accurately locate the site of stimulation and to detect that neighbouring stimuli are actually separate?

Answer 3

SPATIAL DISCRIMINATION

Question 4

More sensitive areas have smaller fields and a higher concentration of _____________.

Answer 4

RECEPTORS

Question 5

What is the term for the minimal distance which two separate stimuli can be distinguished as separate?

Answer 5

TWO-POINT THRESHOLD

Question 6

On the back, the density of tactile receptors is greatly reduced, resulting in what?

Answer 6

RELATIVELY POOR SPATIAL DISCRIMINATION

Question 7

What is the normal threshold for two-point discrimination at the tip of the tongue?

Answer 7

1 mm

Question 8

What is the normal threshold for two-point discrimination at the tips of fingers?

Answer 8

1 - 2 mm

Question 9

What is the normal threshold for two-point discrimination at the palm of hand or sole of foot?

Answer 9

1.5 - 3 mm

Question 10

What is the normal threshold for two-point discrimination at the centre of the back?

Answer 10

6 - 7 mm