1. The Eye (part 1) illusions anatomy brain function

7. In this illustration, the stairs should turn upside down during a steady gaze. The wall with the floating glass sphere will shift from the foreground to the background (or vice-versa)

8. Stare at the picture (on the left) for about 45 seconds
Stare at the picture (on the left) for about 45 seconds. Then, stare at the white section of this image (the right section). You should see the Queen again. Keep your concentration, and for those 45 seconds, don't take your eyes off the picture.

9. Do you think that these lines are parallel. They are
Do you think that these lines are parallel? They are! But it doesn't look like it does it? We suppose that's what makes it an illusion!!!

10. Illusion handouts
Ghostly black patches appear at the white intersections. The illusion was noted by Hermann (1870) while reading a book on sound by Tyndall (1869).

11. Interested in More? Check out Heinemann Hotlinks

12. How can these optical illusions be explained using the anatomy of the eye?

13. Anatomy of the eye w/s – Anatomy of the eye retina ciliary muscles
- cones & rods
- rhodopsin
lens
blind spot
aqueous
humour
cornea
pupil
optic nerve
iris
vitreous humour

14. The blind spot

15. What causes your Blind Spot?

16. What happens after the optic nerve?

17. Flow diagram
Make a 10 step flow chart of what happens during the visual process
1 – Light energy enters the eye via the pupil.