fear

Not Exactly Rocket Science

Tag archives for fear

Bringing an old memory back to mind would, you might think, strengthen it. But not so – when memories are recalled, they enter a surprisingly vulnerable state, when they can be reshaped or even rewritten. It takes a while for the memory to become strengthened anew, through a process called reconsolidation. Memories aren’t just written…

As sufferers of post-traumatic stress syndrome know all too well, frightening experiences can be strong, long-lasting and notoriously difficult to erase. Now, we’re starting to understand why. Far from trying to purge these memories, the brain actively protects them by hiring a group of molecular bodyguards called CSPGs (or chondroitin sulphate proteoglycans in full). By…

A couple of weeks ago, I wrote about propranolol, a drug that can erase the emotion of fearful memories.  When volunteers take the drug before recalling a scary memory about a spider, it dulled the emotional sting of future recollections. It’s not, however, a mind-wiping pill in the traditional science-fiction sense, and it can’t erase…

If you wanted to turn a rat into a fearless critter, unfazed by cats or bigger rats, the best way would be to neutralise a small pair of tiny structures in its brain called the dorsal premammillary nuclei, orPMD. According to new research by Simone Motta at the University of Sao Paolo, these small regions,…

The mainstream media are just queuing up to fail in their reporting of the propranolol story from a couple of days ago. To reiterate: Propranolol is commonly used to treat high blood pressure and prevent migraines in children. But Merel Kindt and colleagues from the University of Amsterdam have found that it can do much…

The wiping of unwanted memories is a common staple of science-fiction and if you believe this weekend’s headlines, you might think that the prospect has just become a reality. The Press Association said that a “drug helps erase fearful memories“, while the ever-hyperbolic Daily Mail talked about a “pill to erase bad memories“. The comparisons…