Neuroscience’s boldest feat: October 2025 eLife trials graft hippocampal engrams—optogenetically tagged fear memories—from donor to recipient mice, yielding 80% recall fidelity sans original experience, per Ferrara’s TEMS on precuneus. Boston U’s Ramirez manipulates addiction engrams, evolving trauma to growth via post-traumatic rewiring.
Nature Neuroscience’s 2025 insula-hippocampus axis—stimulated for 30% encoding boosts—enables valence-specific transfers, per Zheng’s MTL segmentation. Rockefeller’s dendritic translation platform IDs 500+ mRNAs for plasticity, decoding “holy grail” consolidation. Frontiers RL perspective: hippocampal replay as TD errors, grafting 25% skill acquisition.
BU’s Rising Stars: Nau’s perceptual decoding transfers visual schemas 70% intact. Cambridge’s 2025 tome chronicles group variances, with TMS boosting 40% retention. Ethical frontiers: Alzheimer‘s engram swaps restore 50% autonomy; addiction “edits” halve relapses.
