25/04/2026
Parking this here until I have a chance to look for the original paper it references (at end of article).
If anyone here gets to that before me, let me know!
💙
Scientists just overturned one of neuroscience's most fundamental assumptions — memory is not stored exclusively in the brain but distributed across the body's entire cellular network, with non-neural cells in organs, muscles, and immune tissue actively participating in memory formation and recall.
Research at the Salk Institute using single-cell RNA sequencing across 47 different tissue types found that learning experiences trigger identical molecular memory consolidation processes in liver cells, kidney cells, muscle cells, and immune cells as those occurring simultaneously in hippocampal neurons during memory formation. The cellular memory process involves epigenetic modifications — chemical changes to DNA packaging that alter which genes are expressed — that encode information about experiences in cells throughout the body with the same molecular signatures as neural memory engrams. Blocking these peripheral cellular memory processes impaired recall even when brain hippocampal function remained completely intact.
The most striking finding came from transplant medicine: organ recipients receiving livers and kidneys from donors with specific phobias showed measurable preference changes and mild acquired responses related to their donor's documented experiences in 12 documented cases — previously dismissed as coincidence but now explicable through cellular memory transfer. Non-neural cellular memory appears to encode emotional and physiological associations with experiences through hormone and neurotransmitter exposure during the original experience.
This discovery fundamentally expands where neuroscience looks for memory and potentially where medicine intervenes when memory-related conditions require treatment.
Source: Salk Institute for Biological Studies, Howard Hughes Medical Institute, Nature Cell Biology, 2025
