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Mapping

Injection Site Mapping

Characterizing where and how far an injection spread

Definition
The delineation and volumetric characterization of a viral vector or tracer injection site across serial sections, including center-of-mass coordinates, spread volume, and overlap with target brain structures.
Quality Control
Verify injection targeting before analyzing downstream effects
Atlas Coordinates
Injection center mapped to standardized brain space

Why It Matters

Every viral tracing or optogenetics experiment needs to verify that the injection hit the intended target and characterize its spread. Injection site mapping:

  • Confirms the injection center is within the target structure
  • Quantifies spread into neighboring regions (potential off-target effects)
  • Enables exclusion of animals with mistargeted injections
  • Correlates injection volume with downstream labeling efficiency

With PanoBrain's atlas registration, the injection site boundary is automatically mapped to anatomical regions, replacing subjective manual assessment.

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