Recap Visual system 2

Question 1

Melanopsin in retina senses blue light and transmits this information to…

• Superior colliculus
• Thalamus
• Pretectum
• Hypothalamus

Answer 1

• Hypothalamus

Question 2

LGN is…

• a nucleus in midbrain
• a nucleus in thalamus that receives visual input from retina
• a structure in primary visual cortex
• a structure in superior colliculus

Answer 2

• a nucleus in thalamus that receives visual input from retina

Question 3

Magnocellular pathway transmits information on…

• movement of objects
• blue light
• shapes and colors of objects
• orientation of objects

Answer 3

• movement of objects

Question 4

Information from 2 eyes…

• is transmitted separately by and converges only in LGN on the same cells
• converges only on the same cells in layer 4 of V1
• arrives at separate parts of cortical column in V1

Answer 4

• arrives at separate parts of cortical column in V1

Question 5

Binocular disparity …

• is the same as stereopsis
• is the difference in light sensitivity in two eyes
• is the difference in the positions of object representations on two retinas
• is needed for circadian rhythm

Answer 5

• is the difference in the positions of object representations on two retinas

Question 6

Dorsal stream …

• is the same as koniocellular pathway
• goes to structures in temporal lobe
• is the same as ventral pathway
• goes to parietal lobe

Answer 6

• goes to parietal lobe

Question 7

Simple cells are …

• activated by the orientation of the stimulus
• activated when light falls on the center of their receptive fields
• located in MT
• located in V4

Answer 7

• activated by the orientation of the stimulus