Instruction
ACTIVITY
After you have played with the waterfall illusion (or motion aftereffect) demo in the lecture (and also see the link below), describe your experience, explain briefly in your own words what a motion aftereffect is, and say why it occurs. I am not interested in your opinion but in what science has to say about this.
http://isle.hanover.edu/isle.html?ch=Ch05Object/Ch05ProxSim
Click on the above link. Click on Movement and Action in the left-hand panel on the page that you come to. Click on demonstration of Motion Aftereffect.
DISCUSSION
In this week's reading, lecture, and demonstrations, examples are provided of illusions of motion.
Choose two of these and write a paragraph for each in which you describe the phenomenon.
In each of these two cases you have described, why is motion perceived here even nothing is moving? In other words, why does the visual system create motion out of no motion? Do not make this up. What does the science say?