New Drug Deletes Bad Memories

Png_Prince

New Drug Deletes Bad Memories Bill Christensen, Technovelgy.com

LiveScience.com
Mon Jul 2, 11:55 PM ET



Do you have a really bad memory, or past heartache, that you would prefer to forget?


Researchers at Harvard and McGill University (in Montreal) are working on an amnesia drug that blocks or deletes bad memories. The technique seems to allow psychiatrists to disrupt the biochemical pathways that allow a memory to be recalled.


In a new study, published in the Journal of Psychiatric Research, the drug propranolol is used along with therapy to "dampen" memories of trauma victims. They treated 19 accident or rape victims for ten days, during which the patients were asked to describe their memories of the traumatic event that had happened 10 years earlier. Some patients were given the drug, which is also used to treat amnesia, while others were given a placebo.


A week later, they found that patients given the drug showed fewer signs of stress when recalling their trauma.


Similar research led by Professor Joseph LeDoux has been carried out at New York University on rats; scientists were able to remove a specific memory from the brains of rats while leaving the rest of the animals' memories intact. An amnesia drug called U0126 was administered.


The rats were trained to associate two musical tones with a mild electrical shock so that when they heard either of the tones they would brace themselves for a shock. The researchers then gave half the rats the drug when playing one of the musical tones.


After the treatment, the rats that had been given the drug no longer associated that particular tone with an imminent shock but still braced themselves upon hearing the second tone, demonstrating only one memory had been deleted.


Science fiction fans have a number of associations with the idea of banishing unwanted memories. In the 2004 film Eternal Sunshine of the Spotless Mind, Kate Winslet and Jim Carrey play lovers who have a falling out. Winslet's character goes to a company called Lacuna, Inc. to have her memories of the relationship removed; Carrey's character also has the procedure performed (see photo).


In the film, the process involves showing the person a memento of the relationship and then encouraging them to bring up specific memories while an electric shock is given. Not to give away the film, but this technique does not work as planned.


Here's a memory you might have repressed. In the classic Star Trek episode Requiem for Methuselah, Jim Kirk becomes enamored of Rayna, a beautiful woman who turns out to be an android created by a five thousand year old man who calls himself Flint, who was also Leonardo DaVinci and Shakespeare (among many others) during the course of his long life. Flint wants Rayna for himself, Kirk wants her, she loves them both, her circuits overload resulting in her death, and Kirk is devastated.


Finally, Spock saves the day by applying a little-known property of the Vulcan mind-meld, which is that he can make Kirk forget about his sorrows and return to duty (see touching photo).


Science fiction legend Philip K. Dick was one of the first to make use of this idea. In his 1966 short story We Can Remember It For You Wholesale he writes about selectively erasing memories:


Someone, probably at a government military-sciences lab, erased his conscious memories; all he know was that going to Mars meant something special to him, and so did being a secret agent...


Read more about erasing memories. Read more about "Scientists find drug to banish bad memories." Thanks to Technovelgy reader Miez who contributed this story.


http://news.yahoo.com/s/livescie ... gdeletesbadmemories

[ Last edited by  Png_Prince at 4-7-2007 11:52 AM ]

Png_Prince

My question is how do they identify which bad memory should be deleted ? How do they identify that in our brain ?

Atomic_Omnikid

Originally posted by Png_Prince at 4-7-2007 11:55
My question is how do they identify which bad memory should be deleted ? How do they identify that in our brain ?

but first how does memory stored in our brain?in neuron?in some parts of the brain?

Png_Prince

Originally posted by Atomic_Omnikid at 4-7-2007 03:14 PM


but first how does memory stored in our brain?in neuron?in some parts of the brain?

Quite complicated this new discovery but it seems like interesting here.

wei_loon5063

Originally posted by Png_Prince at 4-7-2007 11:55 AM
My question is how do they identify which bad memory should be deleted ? How do they identify that in our brain ?

the drug neutralize electron which is -ve charge with proton.. +ve charge.......

Png_Prince

Originally posted by wei_loon5063 at 6-7-2007 05:50 PM


the drug neutralize electron which is -ve charge with proton.. +ve charge.......

What i mean was how do that drug identifies which memory should be deleted ?

aku_EnSeM

yeah... how do we define bad memory, and how does the drug define bad memory....

just hope that u wouldn't forget ur partner after taking that drug... joking....

thats interesting

Atomic_Omnikid

Originally posted by wei_loon5063 at 6-7-2007 17:50


the drug neutralize electron which is -ve charge with proton.. +ve charge.......

how does the drug knows which electron to neutralize?

does the process happens at subatomic lvl?

aku_EnSeM

is there any answer to this 'which one to delete' question?

Robab

the bad memory is the one that stresses the brain the most
so, the drug can detect the bad memories and delete them