Preview Test: Optical Illusion's

1. What is an optical illusion?

A. A complicated drawing of reality

B. It is a figment of our imagination

C. The name given to a type of entertainment

D. A misleading image presented to the vision

2. Who were the first to talk about optical illusions?

A. Author Anna Claybourne in her book "Movers and Shakers"

B. Psychologists Johannes Muller and J.J. Oppel

C. Greek philosophers

D. Physicist Herman Von Helmholtz

3. What are the types of cognitive illusions?

A. Literal, physiological, and auditory

B. Distorting, illusory, cognitive, and tactile

C. Paradox, distorting, fiction, and ambiguous

D. Optical, physical, and non-existent

4. What is the function of rod cells?

A. Helps us with color vision and fine details

B. Transmits visual information to the primary cortex

C. Generates depth perception

D. Responsible for our vision in dim settings

5. How is depth perception generated?

A. The cones and rods exchange images

B. In the primary cortex

C. Depth perception happens within the inferotemporal cortex

D. Along the optic nerve

6. Where are the images captured by the retina flipped?

A. At the superior colliculus

B. At the optic chiasm

C. At the lateral geniculate nucleus

D. In the occipital cortex

7. What is the function of the primary visual cortex?

A. To transfer images from the retina to the brain

B. To flip images captured by the retina

C. Filtering the visual information and sending it to other areas of the brain

D. Depth perception

8. What percentage of the brain is dedicated to processing visual information?

A. Less than 10%

B. About 25%

C. Less than 45%

D. Over 50%

9. What amount of time does the human brain need to process images?

A. Two seconds

B. One minute

C. Thirteen milliseconds

D. Thirty seconds

10. To what do we attribute this capability?

A. Feedforward processing

B. Visual processing chain

C. Feedback processing

D. Orientation processing

11. What is Professor Knill's position about human vision?

A. Birds have far superior vision than humans

B. Humans cannot recall what they see before 5 years of age

C. Human vision is stationary

D. Human vision is constantly adapting and learning

12. How does our brain and visual system solve object recognition?

A. They continually send visual images back and forth

B. There is currently no clear answer to this question

C. It happens at the optic chiasm

D. Object recognition happens on the retina

13. Why can we not believe 100% of what we see?

A. Our eyes might be emmetropic

B. There is always a disconnect between what we see and reality

C. Interpretation of what we are seeing is an essential component that needs to be considered

D. Due to visual agnosia

14. What part does binocular disparity play in our vision?

A. It helps detect corneal problems early on

B. It is part of the retina

C. It helps the brain figure out distance stemming from two different image locations relayed by both eyes

D. It helps with central vision

15. Why must our brain recur to prior knowledge?

A. For the brain to successfully process visual information quickly

B. To know where to send the visual information captured by the retinas

C. The brain cannot see what it has not learned

D. Because otherwise, we would not be able to see

16. What is the simplest classification for optical illusions?

A. There is no current classification

B. Three main types of optical illusions

C. Each optical illusion is a classification in itself

D. Optical Illusions have not yet been classified

17. What is an example of a literal illusion?

A. The Necker Cube illusion

B. The Hermann Grid Illusion

C. The Elephant Illusion

D. The Revolving Circles Illusion

18. What phenomenon is it based on?

A. The Filling-In Phenomenon

B. A result of our assumptions of the world we live in

C. Constant distortion of the image viewed

D. Overstimulation of our eyes

19. Which visual illusion helps us understand how our visual system works?

A. The Elephant

B. The Hermann Grid Illusion

C. The Penrose Triangle

D. The Kanizsa Triangle

20. Which of the illusions listed illustrates best how the brain can connect the dots of what it is seeing?

A. The Impossible Trident

B. Titchener's Circles

C. The Muller – Lyer Illusion

D. The Scintillating Starburst

Evaluation Questions

21. In questions 21-23 please rate the effectiveness of how well each course met the stated learning objectives: Met the stated learning objectives?

A. Excellent

B. Very Good

C. Good

D. Fair

E. Poor

22. Avoided commercial bias/influence?

A. Excellent

B. Very Good

C. Good

D. Fair

E. Poor

23. How would you rate the overall quality of the material presented?

A. Excellent

B. Very Good

C. Good

D. Fair

E. Poor

24. How were you directed to this course?

A. 2020mag.com

B. OAA Website

C. NYSSO Website

D. Ohio Opticians Website

E. Other

25. Please describe the office in which you work.

A. Independent Optician

B. Independent Optometry

C. Chain retail

D. HMO/Military/Other