Stillwater News Press

Our World

April 2, 2014

Do animals have a sense of humor?

(Continued)

He seems to be onto something. While tickling isn't always pleasant — thus the term "tickle torture" — in multiple experiments Burgdorf has demonstrated the rats' 50 kilohertz chirping is only associated with positive experiences. For example, the rats only made this sound during rough and tumble play when the animals were of similar size. The vocalizations changed when one of the animals involved was much larger than the other, when it was no longer fun and games and instead looked more like bullying. And when given a choice, Burgdorf's rats would push a bar to play a recording of the 50 kilohertz chirp as opposed to other rat noises, suggesting they had a preference for the sound. Finally, when Burgdorf and his colleagues used electrodes, opiates, and other manipulations to stimulate the reward centers of rats' brains, the rats produced that same laughter-like noise.

Whether you call it laughter or not, Burgdorf is convinced these rats' ultrasonic noises signal they're experiencing happiness. Hence the "laughing pill" experiment: He and his colleagues are testing a new antidepressant medication on rats, to see if it makes them "laugh," or chirp happily. If all goes well, Burgdorf believes the resulting medication could eventually be approved for humans. Rats, so often seen as a malicious pest, could end up making the world a happier place.

---

This series is adapted from "The Humor Code: A Global Search for What Makes Things Funny": http://amzn.to/1h0IJvqMcGraw is a professor at the University of Colorado, Boulder. Warner is a former Westword staff writer.

Text Only | Photo Reprints
Our World
Must Read
Buy & Share Photos
NewsPress e-Edition
NewsPress Specials
AP Video
Raw: Israel Bombs Multiple Targets in Gaza Veteran Creates Job During High Unemployment Raw: Cargo Craft Undocks From Space Station Widow: Jury Sent Big Tobacco a $23B Message New Orleans Plans to Recycle Cigarette Butts UN Security Council Calls for MH 17 Crash Probe Obama Bestows Medal of Honor on NH Veteran Texas Sending National Guard Troops to Border Hopkins to Pay $190M After Pelvic Exams Taped Foxx Cites Washington 'Circus Mirror' NASA Ceremony Honors Moon Walker Neil Armstrong Obama Voices Concern About Casualties in Mideast Diplomacy Intensifies Amid Mounting Gaza Toll AP Exclusive: American Beaten in Israel Speaks Obama Protects Gay, Transgender Workers Raw: Gaza Rescuers Search Rubble for Survivors Raw: International Team Inspects MH17 Bodies Raw: 25 Family Members Killed in Gaza Airstrike US Teen Beaten in Mideast Talks About Ordeal 'Weird Al' Is Wowed by Album's Success
Stocks
NDN Video
Obama: Putin must push separatists to aid MH17 probe Michigan inmates no longer allowed to wear orange due to 'OITNB' Adam Levine Ties the Knot Sebastian The Ibis Walks Beautiful Bride Down The Aisle | ACC Must See Moment NASA Ceremony Honors Moon Walker Neil Armstrong Faces of Souls Lost in Malaysian Plane Crash 105-year-old woman throws first pitch Man Creates Spreadsheet of Wife's Reasons for Turning Down Sex 'Weird Al' Is Wowed by Album's Success Rory McIlroy struggles, surges, wins British Open NOW TRENDING: Real life Pac-Man Explosions as hot air balloon crashes in Clinton DUI Driver Dragged to Safety by Officer After Walking Onto Busy Freeway Celebrities That We'd Like to Send to the Moon Spectacular lightning storm hits London Malaysian Flight Victim Was South Florida Grad Rory McIlroy on pace to break British Open records Officials Fear MH17 Site Now Tampered by Rebels Lowes employees repair Vietnam vet's wheelchair Widow of Staten Island man who died after NYPD takedown says he was unjustifiably targeted