# Spatial Addressability **Domain:** Neural Interfaces / Instrumentation **Doc Type:** Technical Constraint Node **Maturity:** Active Research **Primary Source:** [[articles/The Art is Long|The Art is Long: Vespucci of Immortality]] **Related:** [[wiki/Neural Signal Acquisition|Neural Signal Acquisition]], [[wiki/Biocompatibility|Biocompatibility]], [[wiki/Longitudinal Drift|Longitudinal Drift]], [[wiki/Neural Mapping|Neural Mapping]] --- ## Definition **Spatial addressability** is the capacity of a neural interface to read from or write to identifiable cells, circuits, or tissue regions at a known resolution, volume, and coordinate location. ## Why It Matters Temporal inference may be much faster than neural dynamics while the interface still cannot reach enough of the relevant tissue with sufficient precision. Continuity-grade acquisition therefore depends on how many biological elements can be addressed, how stably, and with what damage or uncertainty. ## Key Insight **Bandwidth without stable spatial identity produces fast signals whose biological meaning may drift or remain indeterminate.**