W8 - Motion perception ✅ (NB)

Question 1

What is the evolutionary importance of motion perception?

Answer 1

• Predators that can detect movement of prey more likely to catch it
• Prey that can detect movement of predators more likely to survive
• Prioritize movement perception in many animals (poor depth, shape, colour perception)

Question 2

What are the functions of movement?

Answer 2

1. Attracts attention
2. Provide information about an object’s 3D shape based on its movement
3. Figure-ground segregation
4. Breaks camouflage (freeze reflex)
5. Provides information that enables us to actively interact with environment

Question 3

5 types of movement perceived?

Answer 3

1. Real movement
2. Apparent movement
3. Induced movement
4. Auto-kinetic movement
5. Movement aftereffects

Question 4

What is meant by real movement?

Answer 4

• Definition: Object physically displaced from one place to another
• Perceive movement when the eyes are stationary