Warren Lecture slide part 1.4

Question 1

Visual search and scanning

Answer 1

Completed in an organized efficient and predictable pattern driven by characteristics of the visual array and the task demands

• Reading Linear
• Landscape- circular

Question 2

Visual attention

Answer 2

Sub-serves visual search/scanning
Critical component of visual processing
Varies from global to focal depending on visual analysis needed
- Global attention - getting the lay of the land
- Selective attention - focuses an attentional spotlight to gather specific detail
Can multitask global attention (to a point )
- But not selective attention

Question 3

Foundation Functions

Answer 3

Oculomotor control
- Provides perceptual stability
Visual acuity
- Provides visual clarity - ability to see details
Visual field
- Provides awareness of objects

Question 4

All level must work together

Answer 4

Integrated network

Loss/impairment at one level affects functioning of all other levels

Question 5

Putting it all together

Answer 5

Vision+Perception+Cognition

Question 6

Memory prediction model

Answer 6

Developed by Jeff Hawkins to explain how neo - cortex works

Question 7

Basic premise

Answer 7

Brain operates like a very large and sophisticated memory storage unit
- Empty at birth- we spedn our lifetime filling it through experience

Question 8

Memory Prediction model

Answer 8

We use hierarchical pattern recognition system to guide us in our decision making about how to interact and use objects
- Both bottom up and top down
As patterns come in
- recognize low level details first
- then successively higher details until you make a decision about what to do

Question 9

Level 1

Answer 9

Brain examines incoming sensory information
See something round, red, small, sweet smelling
Identifies it first as fruit then as an apple

Question 10

Level 2

Answer 10

Examine features in greater detail

• Dark red mixed with green, very round, smooth, sweet smelling
• Recognize it as a fuji apple`

Question 11

Level 3

Answer 11

Examine the perfection of the apple

• Completely red on the bottom, no cuts or bruises
• Recognize it as an acceptable apple

Question 12

Level 4

Answer 12

Make a decision to purchase several