6. What is a correct explanation for the Herrman Grid illusion?
Intersections have a lower intensity resulting in more excitation in the on-center, off surround receptive fields
Intersections have a higher intensity resulting in more inhibition in the on-center, off surround receptive fields
Intersections have a higher intensity resulting in more excitation in the on-center, off surround receptive fields
Intersections have a lower intensity resulting in more inhibition in the on-center, off surround receptive fields
7. Where are the cones concentrated?
Fovea
Peripheral retina
Ora serrata
Optic Nerve
8. Light consists of what?
Photons
Atoms
Cells
Electrons
9. What is NOT a cone photoreceptor?
M-cones
L-cones
P-Cones
S-Cones
10. What happens to the sensitivity when the mean intensity of an image is high?
It stays the same
It reduces
It increases
11. What Cone is responsible for middle wavelength of light?
L-cones
M-cones
P-cones
S-cones
12. The visual system can become sensitive to changes in luminance from what?
Light/dark adaptations
Lateral Inhibition
Negative afterimages
Top down influences
13. Which of the following would NOT be considered a bottom-up process that shapes brightness perception?
Adjustment for Shadows
Light/Dark Adaptation
Lateral Inhibition
14. The brain uses knowledge of how light interacts with objects when perceiving brightness. Is this...
Top-Down Processing
Bottom-Up Processing
15. According to classic explanations of the Hermann Grid Illusion, we perceive faint grey blobs at the intersection of the white lines because retinal ganglion cells responding to this location.....
Are inhibited more than cells responding at other positions along the line
Are inhibited less than cells responding at other positions along the line
Are excited more than cells responding at other positions along the line
Are excited less than cells responding at other positions along the line
16. What is assessed using the Ishihara Colour Test?
Opponency
Anomalous Trichromacy
Monochromacy
Dichromacy
17. Where are the rods primarily located?
Ora serrata
Peripheral retina
Fovea
Optic Nerve
18. What aspect of visual input is typically associated with our perception of brightness?
Light Wavelength
Shadows
Light Intensity (Luminance)
Bottom-up Processing
19. What area is responsible for encoding contrast?
Retina
Optic Nerve
Lateral Geniculate Nucelus
Optic Chiasm
20. What does directional sensitivity do?
States that different wavelength of light corresponds to different colour perceptions
