NIDA for Teens: The Science Behind Drug Abuse
Find NIDA for Teens on: NIDAnews on Twitter NIDANIH on YouTube NIDANIH on Facebook
Teacher's Guide

Activity One

You are here

Objectives

The student will learn how hallucinogens cause visual misperception and hallucinations.

Activity

Have students draw a bull's-eye onto a sheet of unruled white paper. Make a small "X" at the center of another sheet of paper. Now, have the students stare at the bull's-eye for about 20 seconds and then quickly shift their focus to the "X". Students will find that an after-image of the bull's-eye will appear. Explain that after-images are a class of optical illusions, which have some similarity to hallucinations. Have students search the Internet and other sources for information about drug-induced hallucinations and prepare a report summarizing their findings.