Closed-loop latency
< 18 ms
SWR detect → stim onset, Tier 1
The BCI Memory Read and Write System is a closed-loop brain–computer interface for reading and writing episodic memory. It detects, decodes, and selectively amplifies hippocampal replay during encoding and consolidation, and injects manifold-constrained engram patterns for de novo memory synthesis and reconsolidation editing. It unifies three natural memory timescales — 10 ms spike bursts, the 1–2 hr synaptic tagging window, and multi-night systems consolidation — under one decoder.
The system unifies four phases — encode, consolidate, retrieve, write — under a single hippocampal index layer. Each phase exposes reading (decode) and writing (stim) primitives at its native timescale. Unlike prior memory BCIs that target a single mechanism, This system operates simultaneously across millisecond ripples, hour-long tagging windows, and multi-day cortical integration.
The system does not attempt to read or write full cortical memory traces. Instead it operates on the hippocampal index — a sparse ~1,024-dim pointer whose reactivation reinstates distributed cortical patterns. This reduces decoder complexity by three orders of magnitude and makes stim precision tractable with current electrode densities.