By changing how we think about the context of past memories, it is possible for us to intentionally forget past experiences, says a study.
The findings have a range of potential applications centred on enhancing desired memories, such as developing new educational tools, or diminishing harmful memories, including treatments for post-traumatic stress disorder. Memory theorists have known for long that we use context -- or the situation we are in, including sights, sounds, smells, where we are, who we are with -- to organise and retrieve our memories.
The findings have a range of potential applications centred on enhancing desired memories, such as developing new educational tools, or diminishing harmful memories, including treatments for post-traumatic stress disorder. Memory theorists have known for long that we use context -- or the situation we are in, including sights, sounds, smells, where we are, who we are with -- to organise and retrieve our memories.
But this study wanted to explore whether and how people can intentionally forget past experiences. The researchers showed participants images of outdoor scenes, such as forests, mountains and beaches, as they studied two lists of random words. The study's participants were told to either forget or remember the random words presented to them interspersed between scene images.
‘It is possible for us to intentionally forget past experiences and enhance desired memories by changing how we think about the context of those memories.’
Right after they were told to forget, the fMRI showed that they "flushed out" the scene-related activity from their brains. "It's like intentionally pushing thoughts of your grandmother's cooking out of your mind if you don't want to think about your grandmother at that moment," Manning said. "We were able to physically measure and quantify that process using brain data," Manning noted.
But when the researchers told participants to remember the studied list rather than forget it, this flushing out of scene-related thoughts did not occur. Further, the amount that people flushed out scene-related thoughts predicted how many of the studied words they would later remember, which shows the process is effective at facilitating forgetting. The study appeared in the journal Psychonomic Bulletin and Review.
Source: IANS
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