phyler's final project

http://www.education.com/science-fair/article/exploring-thresholds-of-sensitivity/
http://jcb.rupress.org/content/191/2/237.full
http://faculty.washington.edu/chudler/chsense.html

Sand Paper Rankings
Grades K-12
To demonstrate the exquisite sensitivity of our sense of touch, try this one. Get five to 10 different grades (roughness) of sandpaper from the hardware store. The degree of roughness should be printed on the back. Cut the sandpaper into pieces about 3 in by 3 in. (If you want to get fancy, you could glue the sandpaper on to block of wood, but this is not really necessary) Make sure you write down the grade of roughness on the back of each cut piece of sandpaper! Mixup the pieces of sandpaper and place them with the rough side up. Using your (or have someone else do it) finger, line up the pieces of sandpaper in order...from the smoothest to the roughest.
Check to see if you (or your test subject) did it right. Where were mistakes made? At what grade of sandpaper?
Materials:
Sandpaper - various grades
Wood Blocks (optional)

With a ball-point pen (or washable marker), touch a location on the skin of a blindfolded person (your subject). A small pen mark should be left behind. While your subject is still blindfolded, give the person a pen of a different color and ask him to touch the point that was just touched by you. Measure the distance from this guessed point to the actual point that was touched.
Try different areas of the body and compare the distances between the actual point and the guessed point.
What part of the body has the least distance between the actual point and guessed point? Why?


http://psych.hanover.edu/APS/teaching.html#sensation
http://psych.hanover.edu/Krantz/sen_tut.html