Instruction
4 Questions to answer
One way to judge whether a person may be lying is to look at his eye movements. Although not all eye movements indicate a particular person is lying, changes in the way a person uses his eyes may indicate that something's fishy about his story.
2 How much can you tell about someone from their eyes? "I looked the man in the eye. I found him to be very straightforward and trustworthy.I was able to get a sense of his soul." George W. Bush, after meeting Russian President Vladimir Putin, June 16, 2001
3 Suggest an example of how others manipulate our attention. You might think ofcatching someone's attention--or dampening it--by flirting, hijacking our emotions in film, fooling us with stage magic, or pick an example you prefer. What does your example show about attention?
4 Questions (Please answer both.)
1. Why can't trichromatic theory explain everything about color vision? Why do we need an opponent-process system as well? Do you think that the two systems are substitutes for each other or do they work together?
(This is a good place to raise any questions you have about how trichromatic theory works or what a color-matching experiment is like. It should become clearer that color is created in the brain (but out of what pieces of information?).
2. How does our color vision depend on the light source and the reflective properties of objects near us? Consider the appearance of animals that live underground, beneath the sea, or who are active at night. Or think about how fishing lures differ.
*The Purkinje shift corresponds to the rod-cone break. When you think about it, doesn't the dark adaptation curve [insert curve here] have to reflect testing of both rods and cones at the same time? If we tested absolute thresholds with only red light (to which rods are blind) or in the fovea (where no rods are found), the illustration would show only the green curve that shows cone (i.e., photopic) function. Both rods and cones were in the part of the retina that was tested to construct the curve. In the early minutes of dark adaptation, the cones adapted faster--which means they are more sensitive in the dark just then. After the rod-cone break, however, the rods continued to become more sensitive than cones in the dark, so it was rod (i.e., scotopic) vision that took over. shows that cones, measured as a group, register yellow-green more sensitively than any other wavelength; while rods respond best