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Memory Modulation
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# Memory Modulation Portal: Mind & Cognition Stage: Preclinical, early human prostheses Evidence: Preclinical Template: Technology Risk: High Reversibility: Context dependent Last reviewed: Apr 2026 == Summary == Techniques to weaken, strengthen, or even implant memories work in animals and hint at trauma treatments, but human memory engineering is early and ethically fraught. == Key takeaways == * In animals, specific memories can be tagged, activated, or falsified with precision tools. * Human work is limited to blunt reconsolidation approaches and early hippocampal prostheses. * Editing memory raises acute questions of identity, consent, and misuse. == What has been shown == Using tools that label and reactivate the neurons holding a memory, researchers have artificially triggered and even implanted false memories in mice, demonstrating that specific memories have a physical substrate that can be manipulated. In humans, the tools are far cruder: drugs given during memory recall may blunt the emotional charge of a trauma, and experimental hippocampal 'memory prostheses' have modestly improved recall in small studies. == Promise and peril == The therapeutic hope is real — dampening traumatic memories or shoring up failing ones in disease. But the same capabilities, if they matured, would touch the core of personal identity. Weakening or planting memories raises consent and authenticity concerns that go beyond ordinary medicine, which is one reason human work remains cautious and early. == Open questions == * Can human memory be edited with any precision and safety? * Who decides which memories may be altered, and how is consent protected? == Watchlist == * Reconsolidation therapies * Memory prostheses * Identity and consent safeguards == References == * Creating a false memory in the hippocampus — Ramirez et al., Science, 2013. https://pubmed.ncbi.nlm.nih.gov/23888038/. Optogenetic implantation of a false memory in mice. * A hippocampal memory prosthesis — Hampson et al., J. Neural Engineering, 2018. https://pubmed.ncbi.nlm.nih.gov/29589592/. Improved recall in humans via a memory-decoding implant. == Categories == [[Category:Mind & Cognition]] [[Category:engrams]] [[Category:reconsolidation]] [[Category:neuroprosthetics]]