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Scientists Find Drug To Delete Your Bad Memories
« on: July 01, 2007, 05:11:30 PM »
By Richard Gray
Science Correspondent
Telegraph UK

It failed to bring Jim Carrey happiness in the award-winning film Eternal Sunshine of the Spotless Mind, but scientists have now developed a way to block and even delete unwanted memories from people's brains.

Researchers have found they can use drugs to wipe away single, specific memories while leaving other memories intact. By injecting an amnesia drug at the right time, when a subject was recalling a particular thought, neuro-scientists discovered they could disrupt the way the memory is stored and even make it disappear.

The research has, however, sparked concern among parliamentary advisers who insist that new regulations are now needed to control the use of the drugs to prevent them becoming used by healthy people as a "quick fix".

But the US scientists behind the research insist that amnesia drugs could be invaluable in treating patients with psychiatric disorders such as post-traumatic stress.

In a new study, revealed in the Journal of Psychiatric Research, psychiatrists at McGill University, in Montreal, and Harvard University, in Boston, used an amnesia drug to "dampen" the memories of trauma victims.

Prof Karim Nader, of McGill University, said: "When you remember old memories they can become 'unstored' and then have to be 'restored'.

"As the memory is getting restored, we gave patients a drug that turns down the emotional part of the memory. It left the conscious part of the memory intact, so they could still remember all the details but without being overwhelmed by the memory."

The research suggests memories can be manipulated because they act as if made from glass, existing in a molten state as they are being created, before turning solid. When the memory is recalled, however, it becomes molten again and so can be altered before it once more resets.

The drug used by the scientists is thought to disrupt the biochemical pathways that allow the memory to "harden" after it is recalled.

The researchers used propranolol, a drug normally used to treat hypertension in heart disease patients but also known to cause memory problems. They treated 19 accident or rape victims for 10 days with the drug or with dummy pills, while they asked to describe their memories of a traumatic event that happened 10 years earlier.

A week later, they found that the patients given the drug suffered fewer signs of stress such as raised heart rate when recalling their trauma.

The technique echoes scenes from Eternal Sunshine of the Spotless Mind, where the characters played by Jim Carrey and Kate Winslet both undergo treatment to delete each other from their memories.

In the film, scientists ask the characters to remember their unwanted memories in order to target them with small electric shocks. But the treatment goes drastically wrong, when the characters discover they in fact wanted to hold on to the memories after all.

Scientists at New York University have published another new study where they claim to have erased a single memory from the brains of rats while leaving the rest of the animals' memories still intact.

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 a drug, called U0126 and known to cause limited amnesia, 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.

Prof Joseph LeDoux, who led the New York team, said: "Such treatments may have highly specific and potentially permanent effects."

The research has alarmed some experts, however, who fear that memory altering drugs could be abused by healthy individuals to delete unwanted memories on a whim.

A new report published by the Parliamentary Office of Science and Technology, which advises MPs about scientific advances, warned that regulations need to be put in place to restrict the use of any memory-blocking drugs, imposing strict limits on their prescription.

Dr Peter Border, who edited the report, said: "There has been a deafening silence from the regulators about whether or not they might consider licensing pharmaceuticals for use in individuals where there is no medical benefits. There is a need for someone to consider how to regulate these things."

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Sherwin2009

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Re: Scientists find drug to delete your bad memories
« Reply #1 on: May 13, 2009, 03:37:23 PM »
      At the end of the experiment of the scientists what will be there conclusion to it?


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Macky Ferniz

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Re: Scientists find drug to delete your bad memories
« Reply #2 on: May 13, 2009, 03:56:15 PM »
Puede ni gamiton ni Joc-Joc Volante para ma erase iyang memory sa iyang gi himo sa Fertilizer Scam. Unya makapasa na siya sa Lie Detector Test.
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hofelina

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Re: Scientists find drug to delete your bad memories
« Reply #3 on: May 13, 2009, 05:03:40 PM »
I think I need this.

lalyoo

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Re: Scientists find drug to delete your bad memories
« Reply #4 on: May 13, 2009, 05:11:41 PM »
Hehehehe aju na macky e apply sa tanang politiko dha sa ato .

Macky Ferniz

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Re: Scientists find drug to delete your bad memories
« Reply #5 on: May 13, 2009, 05:27:13 PM »
Lalyoo, nagka daghan na ang mga nagpakabana labina ang mga bag-o nga tubo.

Nagpa register na ba ka sa "Boto Ko Ipatrol Ko"?

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Re: Scientists Find Drug To Delete Your Bad Memories
« Reply #6 on: May 19, 2009, 01:03:26 PM »
LEts try taking this drug, to prove its effectiveness.
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Re: Scientists Find Drug To Delete Your Bad Memories
« Reply #7 on: May 21, 2009, 08:19:41 PM »
This is self induced denervation of transmission. This is same as the effects of alzheimers. Only self inducing it.

The frailties of neurology and neuroanatomy is complemented by the fact that medical science has only yet to touch and understand the complexities of neuroscience. Any increase of this said treatment, can inasmuch as destroy or damage memories that are necessary.

The term 'bad memories' is so vague.

In reality, there is no separation from bad and good or excellent memories--all are stored in the cerebral cortex--and any damage of one lobe of the cortex--can inasmuch as mitigate even the 'wanted' memories.

Just my own perspective.



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