Neurons storing your memories rotate over weeks. BCI decoders must track the drift. #Neuroscience

The assumption that specific cells store specific memories - the premise underlying brain-computer interfaces, Alzheimer's research, and a century of computational neuroscience - turns out to be incomplete. Longitudinal recordings confirm representational drift: the brain continuously reassigns which neurons encode which memories while the memories themselves stay stable, preserved in the shifting pattern of relationships between cells.

Three implications follow. BCI decoders trained on day-one neural activity may be reading the wrong cells by day thirty - the field is now building adaptive decoders that follow the drift rather than fighting it. For degenerative disease, the therapy focus shifts to the reassignment process itself, changing what researchers look for and where. And in a striking convergence with machine learning, the brain appears to be solving what AI researchers call catastrophic forgetting - through continuous role redistribution across a stable relational network. The instruments - chronic implants, longitudinal imaging, population-tracking decoders - finally got precise enough to see what the substrate was doing all along.

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Watch the full episode here: https://www.youtube.com/watch?v=0s3COqVe7WQ

Get the full story on all of this and much more - read the full edition of today's Century Report here: https://sharedsapience.com/the-century-report-may-20-2026/

#RepresentationalDrift #NeuralCoding #Brain #Individual #TechNews #AI #Tuesday

Видео Neurons storing your memories rotate over weeks. BCI decoders must track the drift. #Neuroscience канала Shared Sapience