Exam 3

Question 1

Retinal disparity

Answer 1

difference in the images received by the two eyes as a result of their different locations.

Question 2

Acuity

Answer 2

sharpness in sight. By age 10 their vision is 20/20

Question 3

Presbyopia

Answer 3

a condition that affects the ability to see nearby images (can be corrected with lenses) becomes clinically significant

Question 4

Figure and ground perception

Answer 4

objects of interest seen as distinct from background

Ex. Puzzle pages of embedded objects

Question 5

Whole and part perception

Answer 5

parts of a picture or object discriminated from whole, yet can be integrated

Question 6

Motion parallax

Answer 6

the change in optical location for objects at different distances during viewer motion. Nearer objects overlap more distant objects.

Question 7

Laterality

Answer 7

the awareness that one’s body has two distinct sides that can move independently

• children show adultlike responses by age 10 years
• labeling left and right improves in late childhood

Question 8

Lateral dominance

Answer 8

preferring one eye, ear, hand, foot over the other

• Infants show preferences
• Handedness is established around 4 years of age

Question 9

Sensation

Answer 9

is the neural activity triggered by a stimulus activating a sensory receptor
- Sensory nerve impulses travel sensory nerve pathways to the brain

Question 10

Perception

Answer 10

is a multistage process in the central nervous system. Perception is the process whereby we attach meaning to sensory stimuli
Ex: Selection, processing, organization and integration

Question 11

Body Awareness

Answer 11

identifying body parts: children improve in labeling

Question 12

what are the 2 different kinds of proprioceptors in kinesthetic development?

Answer 12

1. somatosensors – located in muscular system

2. vestibular apparatus – inner ear

Question 13

what are the 3 structures that are involved in hearing?

Answer 13

1. External
2. Middle
3. Cochlea of the inner ear

Question 14

Know the symptoms of a visual problem

Answer 14

• lack of eye-hand coordination
• squinting
• under or overreaching for objects
• unusual head movements

Question 15

How does the absolute threshold in the auditory system change with aging?

Answer 15

• Hearing loss (presbycusis) is more frequent in older adults
• Degeneration
• Life long exposure to environmental noise

Question 16

What is a newborns level of acuity?

Answer 16

In the first month, acuity is 20/400 (5% of adult level)

Question 17

Prehension?

Answer 17

Is the grasping of an object

Question 18

asd

Answer 18

v