Forgetting is tougher than remembering

Forgetting is tougher than remembering

AgenciesUpdated: Wednesday, May 29, 2019, 01:15 AM IST
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Houston: Choosing to forget something uses more brain power than trying to remember it, according to a study that could lead to treatments to help people rid themselves of unwanted memories. The findings suggest that in order to forget an unwanted experience, more attention should be focused on it. The study extends prior research on intentional forgetting, which focused on reducing attention to the unwanted information through redirecting attention away from unwanted experiences or suppressing the memory’s retrieval.

“We may want to discard memories that trigger maladaptive responses, such as traumatic memories, so that we can respond to new experiences in more adaptive ways,” said Jarrod Lewis-Peacock, an assistant professor at The University of Texas at Austin in the US. “Once we can figure out how memories are weakened and devise ways to control this, we can design treatment to help people rid themselves of unwanted memories,” Lewis-Peacock.

Memories are are dynamic constructions of the brain that regularly get updated, modified and reorganised through experience. The brain is constantly remembering and forgetting information — and much of this happens automatically during sleep.  The study focuses, instead, on the sensory and perceptual areas of the brain, specifically the ventral temporal cortex, and the patterns of activity there that correspond to memory representations of complex visual stimuli.

“We are looking not at the source of attention in the brain, but the sight of it,” said Lewis-Peacock. Using neuroimaging to track patterns of brain activity, the researchers showed a group of healthy adults images of scenes and faces, instructing them to either remember or forget each image.  Their findings not only confirmed that humans have the ability to control what they forget, but that successful intentional forgetting required ‘moderate levels’ of brain activity in these sensory and perceptual areas — more activity than what was required to remember. —PTI

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