Reference no: EM132408351

a. Match each visual impairment listed below with a single lesion or mutation in the visual system that could be responsible for it. You should not use the same lesion/mutation twice.

b. For each pair you have determined in part a, explain briefly what is known about how the given lesion produces the specified visual impairment. 

Visual impairment:

i. Complete loss of vision only in the temporal halves of both eyes' visual fields.

ii. Complete loss of vision in the nasal and temporal halves of the right eye.

iii. Complete inability to see color.

iv. Difficulty adapting when going from high to low lighting conditions.

v. Inability to identify the faces of celebrities.

Lesion/mutation:

a) Complete loss of rods. 

b) Bilateral and complete lesion to cortical visual area V4. 

c) Selective loss of cones sensitive to short wavelengths.

d) Loss of the retina of the right eye. 

e) Complete transection of the optic chiasm (cutting only the fibers that cross there). 

f) Bilateral and complete lesion to cortical area MT.

g) Bilateral lesion in the parietal lobe. 

h) Mutation and selective loss of function of magnocellular ganglion cells in both retinae. 

i) Bilateral lesion in the temporal lobe.

j) Loss of the retina of the left eye.