Vision And Visual Pathways In The Brain Flashcards
What is the visual system
The unifying system that integrates all other systems
What does the visual system allow us to do
To learn about, interact, and survive in the world
Used to help make decisions social interaction motor control and posture
Areas vision is important in
Movement detection attentive functions communication subliminal cues Eye hand coordination
What does vision do in movement detection
Alerts us to pleasure, danger,attention
gives us advanced warning
Which fields develop first
Temporal
How is the development of vision important for babies
Babies don’t have central vision right away they
only see about 25 cm
mobile should be close to the side
How long does it take for central vision and color to develop
2 to 4 months
How long does it take for vision to fully myelinate
Two years
How long till the visual system fully develops
11 years
What are the four A’s in attentive functions in vision
Arouse awake alert attend
What percent of our communication is gestures and nonverbal
70
What percent of our communication is actual verbal
30
What are subliminal cues
Cues with in the environment
unconscious
anticipatory in nature
insight when something doesn’t seem right
Effects of visual impairments
Alters quality and amount of input decrease speed of processing changes and decision making changes interactions with people and environment Decreased adaptation
Causes of visual impairments
CVA TBI trauma MS low vision
What is sight
Related to function of eyes
related to visual acuity extraocular muscles ocular impairments
OT’s don’t work with site
What is vision
The whole visual system and how it works with other systems
ambient and focal vision
OT’s work with this:teach compensatory techniques and ways to improve life
What is ambient vision
Where? Subliminal spatiotemporal balance/posture movement detection anticipatory global awareness