Which TWO of the following statements are true of simultaneous contrast illusions? 1. In the simultaneous tilt illusion, vertical stripes appear tilted away from the tilt of their surrounding stripes. 2. In the luminance illusion, a grey patch appears darker when surrounded by a dark area than when surrounded by a light area. 3 A purple patch appears slightly closer to blue when surrounded by red, and closer to red when seen against a blue background. 4. Visual illusion effect only exist for motion.

Related Mcqs:

1. The tilt illusion, the luminance contrast effect and the color illusion are examples of what type of contrast effect?

   A. Before-effects
   B. After-effects
   C. Waterfall illusions
   D. Perceptual illusions

2. Sometimes the visual information available to us about a stimulus is ambiguous because of differences in depth, lighting or shading cues. For example, patterns of shading can create the illusion of objects as protruding from a visual field. How do we make sense of the visual information to recognize ambiguous stimuli?

   A. Visual system relies on other people’s Knowledge of objects to identify ambiguous stimuli
   B. Visual information about protruding objects is impossible to process
   C. Visual system relies on assumptions about the physical world to identify ambiguous stimuli
   D. Both (a) and (c)

3. Movement illusions such as the moon-cloud illusion, in which the moon appears to race from cloud to cloud, illustrate the role in visual perception played by ______________?

   A. binocular disparity
   B. a frame of reference
   C. a linear perspective
   D. bottom-up processing

4. The barn owl’s right ear opens slightly upward while its left ear opens slightly downward. This asymmetry is most useful for enabling the owl to detect the________of a sound.

   A. loudness
   B. amplitude
   C. wavelength
   D. location

5. The illusion of the rat or the professor and the young lady or the old lady are both examples of what type of illusion?

   A. Constancy
   B. Simultaneous contrasts
   C. Perceptual inference
   D. Reversible figures

6. Which of the following explains why a rose appears equally red in bright and dim light?

   A. the Young-Helmholtz theory
   B. the opponent-process theory
   C. feature detection
   D. color constancy

7. If you project a red, a green, and a blue light into space, the point at which the three lights cross will lead to the perception of:

   A. Ultraviolet light
   B. White light
   C. Orange light
   D. Infrared light

8. The illusion of movement created by presenting visual stimuli in rapid succession is called:

   A. convergence
   B. retinal disparity
   C. motion parallax
   D. the phi phenomenon

9. The illusion of movement created by presenting visual stimuli in rapid succession is called:

   A. convergence
   B. retinal disparity
   C. motion parallax
   D. the phi phenomenon

10. The process of comparing currently experienced visual input with past visual memories takes place with ___________?

    A. Broca’s area
    B. the sensory cortex
    C. association areas
    D. the limbic system