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Flashcards in Exam 3 Deck (18)
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1

Retinal disparity

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

2

Acuity

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

3

Presbyopia

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

4

Figure and ground perception

objects of interest seen as distinct from background
Ex. Puzzle pages of embedded objects

5

Whole and part perception

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

6

Motion parallax

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

7

Laterality

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

8

Lateral dominance

preferring one eye, ear, hand, foot over the other
- Infants show preferences
- Handedness is established around 4 years of age

9

Sensation

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

10

Perception

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

11

Body Awareness

identifying body parts: children improve in labeling

12

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

1. somatosensors – located in muscular system
2. vestibular apparatus – inner ear

13

what are the 3 structures that are involved in hearing?

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

14

Know the symptoms of a visual problem

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

15

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

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

16

What is a newborns level of acuity?

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

17

Prehension?

Is the grasping of an object

18

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