8.3 Visual illusions Flashcards
What does the observer have to do in the muller-Lyer illusion?
The observer has to describe which o the two lines are bigger.
Name the two distortion illusion?
- Muller-Lyer illusion (Arrows in lines)
- Ponzo illusion (‘A’ shaped illusion’)
Which line is usually perceived as longer in the muller Lyer illusion?
Line with outward illusion.
What has bee. Found about people from western cultures to do with the muller-Lyer illusion?
People from the west are more susceptible to this illusion.
What did Segall (1966) propose about why western cultures are more susceptible to the Muller-Lyer illusion?
Because ‘carpentered’ cultures are used to seeing buildings that have angles from intersections in the ceilings and floors. People automatically apply these learned depth cues to the arrows.
In the Ponzo illusion, which line appears longer? And why?
The top line. This is because the false depth cues from the converging lines lead to the brain interpreting the top line as further away.
What are the two ambiguous figures?
The Becker cube and Rubin’s vase.
What are presented to us with ambiguous figures?
Two hypotheses are presented to us and we are unable to make a definite interpretation.
Explain neckers cube?
Is a line drawing of a cube that appears to change back and forth. Different orientations of the cube can be perceived.
Describe Rubin’s vase?
We can perceive either a face or a vase. It is difficult to reject either figure because both are appropriate interpretations.
