3.What physical properties of light correspond to colorand brightness? Why do we say that frequencyand wavelengthare fundamentally the same property?4.Describe the parts of the eye and their functions. Discuss the difference between rodsand cones. What is the relation between ganglioncells in the retina and the optic nerve?5.What is the sensory homunculus? In what way are most human figure representations of the sensory homunculus inaccurate (see the instructor’s notes inthe transcript to answer in your own words)?