During the one minute of looking at the picture, did the picture switch for the other interpretation? How many switches occurred during the one-minute interval?

Exercise 1 – blind spot

Instructions:

Close your right eye. Look at the circle with the left eye. Move your eye closer to and further away from the picture. At some distance the plus sign should disappear.
Close your left eye. Look at the plus sign with the right eye. Move your eye closer to and further away from the picture. At some distance the circle should disappear.

Questions:

1.1. Describe, what you observed.

1.2. Explain observations.

Exercise 2.

Question:

2.1. Describe and explain the Mach band phenomenon.

Exercise 3.

Instructions:

Look at the following figure for 30 seconds with eyes fixated on the dark spot in the middle of the strangely colored flag. When the figure disappears, keep looking at the same spot, do not move eyes.

Question:
Describe what you see.

Exercise 4.
Instructions:

Similarly, as in previous exercise: Look at the figure for 30 seconds with eyes fixated on the cross in the middle of colored eagles. When the figure disappears, keep looking at the same spot, do not move eyes.

Questions:

4.1.
Describe what you see.

4.2.
Explain observations in exercises 3 and 4.

Exercise 5.

Look at color plates a,b,c,d,e and note what you see. Then for yourself compare your answers with the possible readings associated with each plate. Evaluate whether your answers fall within “normal vision” or differ from it.

Exercises 6.
Question:

6.1. Describe figure 6.

Exercise 7.
7.1. Describe Adelson illusion and try to explain it.

Exercise 8.
Questions:

8.1. Look at the picture for one minute and note which of the two interpretations appears to you first.

8.2. During the one minute of looking at the picture, did the picture switch for the other interpretation? How many switches occurred during the one-minute interval?

Exercise 9.
Questions:

9.1. Look at the picture for one minute and note which of the two interpretations appears to you first.

9.2. During the one minute of looking at the picture, did the picture switch for the other interpretation? How many switches occurred during the one-minute interval?

Exercise 10.

10.1. Describe and compare what you see on the three plots. Try to explain your observations.

Exercise 11.

11.1. Describe and compare what you see on the four plots. Try to explain your observations.