Sensation and perception

Question 1

Methods that measure the strength of a stimulus and the observer's sensitivity to that stimulus are called, collectively:
A)introspections
B)psychophysics
C)stimulation
D)sensation and perception.

Answer 1

B) psychophysics

Question 2

What is an absolute threshold?

Answer 2

the lowest intensity of a stimulus that is detectable for humans

Question 3

Where in the eye does the light first passes through?

Answer 3

cornea

Question 4

What is the route of the light through the eye?

Answer 4

1. Cornea
2. Cilliary muscles
3. Retina

Question 5

What type of receptors are in fovea?

Answer 5

Cones

Question 6

For what type of perceptions are cone receptors?

Answer 6

Day, color, fine details

Question 7

For what type of perceptions are the rodes receptors?

Answer 7

Low-intesity light, movement, night vision, peripheral vision

Question 8

Where are the rode receptors localized?

Answer 8

Around the fovea

Question 9

With what type of lens do you correct myopia?

Answer 9

Concave lenses

Question 10

What type of lens corrects farsightness?

Answer 10

convex lenses

Question 11

What causes presbyopia?

Answer 11

Diminished elasticity of the lens

Question 12

What is presbyopia?

Answer 12

The eye cannot accommodate enough, cannot see nearby objects

Question 13

What is astigmatism?

Answer 13

Spherical curvature of the corneea( curbura neregulata a corneei)

Question 14

What is cataract?

Answer 14

Clouding on the lens

Question 15

What is macular degeneration?

Answer 15

Retinal degeneration of the fovea. The focus is black and distorted

Question 16

What is glaucoma?

Answer 16

Increased eye pressure, worsening of peripheral vision

Question 17

What is the route of the 130 million receptors?

Answer 17

Compressed via bipolar and ganglion cells and sent to the optic nerve

Question 18

What do ganglion cells detect?

Answer 18

Contrast

Question 19

Where are the receptive fields of the ganglion cells?

Answer 19

Primary visual cortex(V1)