Project Summary: Question 1 How are sensation and perception different? Give a specific example. Question 2 What is an absolute threshold? How was the concept changed by signal detection theory? Question 3 Explain how lateral inhibition enhances edges or how it accounts for Mach bands. Question 4 How are the receptive fields of retinal ganglion cells created? Be specific in your answer. Question 5 In humans, night vision is poorer than daytime vision. Explain why. Question 6 Explain why the number of colors we can see exceeds the number of wavelengths in the visual spectrum.