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Vision Demos

Page history last edited by Jeremy Houska 6 years, 8 months ago Saved with comment

Main -> In the Classroom: Sensation -> Vision Demos

Where rods and cones are and aren't (courtesy of Joseph Swope via PSYCHTEACHER listserv 9/10/13) 

Have a student sit in a chair facing the class.  Have another student stand behind him with a handful of different colored pens or markers.  It doesn't matter what color the ink is, the outside of the pens need to have different colors.  Have the student who is standing behind the seated student slowly bring one of the colored pens around in an arc to the seated student's peripheral vision.  Try to keep the colored pen about two feet away from the seated student's head.  The seated student will be able to see movement but will not be able to determine the color of the pen.  Have the seated student say stop when he sees movement.  Then have him guess the color.  He will be unable too, because the pen is not being focused on his retina.


Find your blindspot (Jim's Pages)

Close your left eye, stare at the cross on the left side of the screen. The moving ball will disappear when it crosses the blind spot.


Map your blindspot (Online Psych Lab, created by Michael R. Scheessele, Purdue University)

Close your left eye, stare at the cross on the left side of the screen.  Start the program.  Press 1 when you see a white dot.  When the program is over, you'll have a map of what you saw.  The dark area is the area that fell on your blindspot. 





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