This PowerPoint presentation discusses the concept of perception through various visual illusions and experiments. Perception is defined as an individual's interpretation of reality based on selected, organized, and interpreted stimuli using existing knowledge, beliefs, and assumptions. Several slides demonstrate optical illusions that manipulate visual perception, such as images that appear to lean more or rotate despite being identical. Other slides feature ambiguous images that can be interpreted in multiple ways, showing how perception is subjective. The presentation concludes by thanking contributors for sharing knowledge about perception.

1. POWERPOINT
PRESENTATION OF
Dr.KESIRAJU RAMPRASAD

2. PERCEPTION

3. WHAT IS PERCEPTION
• THE PROCESS BY WHICH AN
INDIVIDUAL
SELECTS, ORGANISES, AND
INTERPRETS STIMULI INTO A
MEANINGFUL AND COHERENT
PICTURE OF THE WORLD.

4. PERCEPTION MEANS
• YOUR INTERPRETATION OF REALITY AFTER
INFORMATION/ STIMULI IS……
• (A) FILTERED OUT
• (B)SELECTED
• ©ORGANISED
• (D)DEFINED
• CONTD…..

5. • USING YOPUR EXISTING KNOWLEDGE
• (A) KNOWLEDGE
• (B)NEEDS
• © BELIEFS
• (D) VALUES
• (E)ASSUMPTIONS
• (F) ATTITUDES

6. PERCEPTION
In this BELOW test DO
NOT READ the
words, say aloud the
COLOR of each word

7. YELLOW BLUE ORANGE
BLACK RED GREEN
PURPLE YELLOW RED
ORANGE GREEN BLACK
BLUE RED PURPLE
GREEN BLUE ORANGE

8. Which of the following
two images of the
tower of Pisa seems to
be leaning more

9. PERCEPTION

10. PERCEPTION
• The images are actually identical, but the tower on the right seems
to lean more because the human visual system treats the two
images as one scene.
• Our brains are conditioned to expect parallel towers to converge
toward a common vanishing point, but because the tower on the
right does not converge, our visual system interprets that it is
leaning at a different angle
• . A common example of this conditioning is the way 3D movies
and 3D TVs trick our minds into believing that images are actually
coming out of the screen, when in fact they are not. Our minds are
conditioned to believe 3D images move in 3 dimensions.
• With a bit of technical help, we can trick our minds into visualizing
this on a 2D screen. Below is a perspective drawing with three
vanishing points of what our eyes expect

11. • Hold your head steady and fix your eyes on
the dot in the center of the picture. The
colored dots will seem to disappear in a few
seconds. The effect is due to retinal
fatigue which occurs when the afterimage of
an object cancels the stimulus of the object on
the retina. The effect is most pronounced
when the objects do not have well-defined
edges that are detectable by small eye
movements

12. • The circles appear to rotate when you move
your head closer and further away from the
screen while looking at the dot in the center.
Our peripheral vision interprets the relative
increase or decrease of the image in the retina
as rotational motion of the slanted lines.

13. PERCEPTION

14. • WHICH VERTICAL LINE IS BIGGER IN THE NEXT
SLIDE?
• (a) LEFT PICTURE
• (B) RIGHT PICTURE

15. PERCEPTION

16. PERCEPTION
• The Vertical lines are both the same length.

17. • WHICH DIAGONAL LINES A-B
AND B-C ARE BIGGER IN THE
NEXT SLIDE?

19. PERCEPTION
•The diagonal lines
A-B and B-C are
equal in length.

20. • ARE THE DIAGNAL LINES
ARE PARALLEL?

21. PERCEPTION

22. PERCEPTION
•The diagonal lines
are parallel

23. • Blind Spot Experiment
The retina is the part of the eye covered with
receptors that respond to light. A small
portion of the retina where the optic nerve
connects to the brain has no receptors. An
image that falls on this region will not be seen.
Close your right eye.

24. Close your right eye. With your left eye, look at
the L below. Slowly move your head closer or
further away from the screen while looking at
the L. The R will disappear when your head is
approximately 50 cm (20 in) from the screen.
You can repeat the experiment with your right
eye by looking at the R.

25. PERCEPTION

26. •ARE THE THESE LINES
ARE PARALLEL IN THE
NEXT SLIDE?

27. PERCEPTION

28. The radiating lines influence our
perception of the parallel lines

29. The radiating lines influence our
perception of the parallel lines

30. • WHICH CENTRE CIRCLE IS
BIGGER IN THE NEXT
SLIDE?

31. PERCEPTION

32. PERCEPTION
• The center circles are both the same size

33. PERCEPTION
• There are only white circles at the
intersections

34. PERCEPTION

35. PERCEPTION
Illusory Contours
Although there are only circles with sections
taken out of them, our eyes strive to see
triangles. The sides of the triangles may
appear curved when the angles of the sections
do not add up to 180 degrees

38. PERCEPTION
Rotating Wheels
The circles appear to rotate when you move
your head closer and further away from the
screen while looking at the dot in the center.
Our peripheral vision interprets the relative
increase or decrease of the image in the retina
as rotational motion of the slanted lines.

40. PERCEPTION
• Warped Squares?
There are no curved lines in these figures. You
can use a ruler to check it out.
The diagonal patterns created by the tiny
squares distort the perception of the pictures

41. PERCEPTION

42. PERCEPTION

43. PERCEPTION
• Shifting gears
Afterimages of complementary
colors create apparent
movement in our peripheral
vision
as our eyes shift across the
page

45. PERCEPTION
• A portion of misplaced
lines can be clearly
identified as forming a
circle, even when there is
no outline of a circle

46. PERCEPTION

47. • OBSERVE THE NEXT FEW
SLIDES CAREFULLY.

48. PERCEPTION

51. • THE WORD IN THE PICTURE
IS ILLUSION.
• LOOK CAREFULLY.

52. PERCEPTION

53. • THE WORD IN THE ABOVE
PICTURE IS
•LIFT

54. •Two Words in
One Painting

56. •One face?
Or two profiles
facing each other

58. See this photo of Albert Einstein?
Get out of your seat and look at it from ten feet
away,
It will morph into Marilyn Monroe

60. A Native American profile?
Or an Eskimo entering a cave?

61. PERCEPTION

62. • ARE YOU ABLE TO SEE THE
SERIES OF YATCHES OR
PILLERS?

64. •THE ABOVE PICTURE IS
FLAT

65. • YOU CAN FIND DIFFERENT PICURES IN THE
BELOW SILDE

66. PERCEPTION

68. • YOU CAN FIND ONE MORE
PICTURE IN THE ABOVE
SLIDE

69. • WHAT ARE YOU OBSERVING IN THIS SLIDE?
A OLD WOMAN OR
• A YOUNG LADY

71. WHAT IS THE NUMBER IN THIS
PICTURE?

72. • PRESENTED BY
• Dr.KESIRAJU RAMPRASAD
• EDUCATIONAL
PSYCHOLOGIST AND
COUNSELOR

73. • THANKS TO MANY PEOPLE WHO
CONTRIBUTED GREAT KNOWLEDGE ABOUT
THE PERCEPTION CONCEPT.
• MY GREATFUL THANKS TO ALL THE GREAT
PEOPLE WHO CONTRIBUTED TO PREPARE THIS
SLIDE.