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Scientists Use Neurofeedback to Selectively Suppress Traumatic Memories

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Discovery

Curated by Surfaced Editorial·Psychology·2 min read
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An international team from the University of St Andrews and ATR International has developed a technique using real-time fMRI neurofeedback to selectively suppress specific fear-related memories. Participants were shown images associated with mild electric shocks, and then trained to reduce brain activity in their hippocampus when thinking about these memories, without consciously recalling them. The researchers observed a significant reduction in physiological fear responses, such as skin conductance, linked to the suppressed memories. This non-invasive method offers a novel approach to directly modify emotional memory traces in the brain. The study was published in Nature Human Behaviour in 2020.

Why It’s Fascinating

This breakthrough demonstrates a powerful new form of neuroplasticity: the ability to consciously and non-invasively regulate specific memory circuits, which could revolutionize trauma therapy. It moves beyond traditional talk therapy by directly targeting the neural underpinnings of distressing memories, overturning the idea that some memories are inherently immutable. This could lead to highly effective, non-pharmacological treatments for PTSD, phobias, and anxiety disorders, potentially within 5-7 years, offering relief to millions. Imagine having a mental "delete button" for your most painful memories, guided by technology. Patients suffering from PTSD and clinical psychologists will find this particularly impactful. Does suppressing a memory truly remove its impact, or simply hide it from conscious recall?

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