Feb. 19, 2009 -- Bad date last night? Take this pill and forget all about it. In a bid to stem the harmful effects of fear triggered by haunting memories, psychologists have come up with a concoction that prevents the brain from reliving the bad experiences. The findings may have implications for understanding and treating people suffering emotional disorders, such as post-traumatic stress disorder, said University of Amsterdam psychologist Merel Kindt, the lead author of a paper in this week's issue of Nature Neuroscience. Kindt and colleagues devised a test to see if the cycle of fear could be eased by interrupting the brain's ability to recreate a memory of a traumatic event. Related Content:
Sixty volunteers were shown pictures of spiders and given a mild electrical shock to create bad memories. The next day, they saw the pictures again but half were given the drug propranolol, a beta-blocker commonly used to treat heart disease. The other half took a placebo pill. The participants returned a third day and were shown the pictures again. The researchers found that people given propranolol had a much lower emotional response -- measured by a startle reflex -- to the images. "The procedure did really eliminate a simple fear response … which is a promising basis for future treatments," Kindt wrote in an email to Discovery News. "This was not possible before." Psychologists typically try to treat memory-triggered stress disorders by teaching patients to modify their response to fear, but the technique is ineffective for many people. Get More NewsSpiders, Scorpions Among World's Oldest CreaturesMany creepy crawlies have been on Earth much longer than previously believed.Blood-Sucking Vampire Bats Sing DuetsWhite-winged vampire bats "harmonize" with separated roost mates.Oldest Hebrew Writing Possibly FoundAncient inscriptions on a 3,000-year-old pottery shard could make history.Rare, Prehistoric-Age Reptile Found in N.Z.A tuatara has been spotted on the New Zealand mainland for the first time in 200 years.Iceman Has No Living RelativesOetzi, the 5,300 year-old frozen mummy, left no living genetic legacy.SLIDE SHOW: Landscapes of TerrorWhat makes a place feel scary? There are scientific explanations.It's Official: People Are Warming the PolesHumans are conclusively to blame for polar warming, say scientists.Eight-Armed Animal Preceded DinosaursWhat may be one of Earth's first animals was no bigger than a coaster and had eight arms.Phoenicians Live on in People's GenesOne in 17 Mediterranean men may be descended from ancient Phoenicians.Pesticides, Fertilizers Linked to Frog DeclineA pesticide is found to promote parasites among amphibians.Hubble Telescope Taking Photos AgainThe Hubble Space Telescope is once again snapping stunning photos of the universe.Andean Mummy Hairs Show Hallucinogen UseScientists find direct evidence of hallucinogenic drug use among ancient Andeans.Opals on Mars Reveal Planet's Long Wet PastOpals found on Mars suggest the planet has been wet for much longer. |
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