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To Know More

How Laughter Works
World Laughter Tour
Why Laugh?
Laughter and the Brain
What's So Funny & Why?
Limbic System
American Scientist article by Robert Provine
Laughter research
Lighten Up!
How Laughter Works - from How Stuff Works
What's So Funny and Why: Laughter and the Brain
A Big Mystery: Why Do We Laugh
Brain may hinder sense of self-tickling - from Seattle Times
Interview with Dr. Robert Provine - Laughter
Laughter - from American Scientist
Why laugh?
Laughter: A Scientific Investigation

Funny Fix
American Association for Therapeutic Humor
Adapting Humor to Therapy
Laughter: The best Medicine?
Matter Leaves Them Laughing
How the Brain Processes Humor
Humor on the Brain
Humor: An Antidote for Stress

Did you hear the one about the prefrontal cortex?
The Acoustics Of Laughter: New Insights Into This Mysterious Form Of Expression
The Mystery of Ticklish Laughter (abstract)
Humor: How Does It Work?