digital-drosophila/registry/catalog-20260929/evidence/phase4n-credit-assignment/dan-source/phase4m-gate-audit.json

{
  "endogenous_DAN_as_teaching_gate": 0,
  "external_US_gates": 500,
  "observed_endogenous_DAN_activity_is_not_equivalent_to_dopamine_concentration": true,
  "policy": "Phase 4M implementation opens plasticity once at imposed 90 ms US, not at endogenous DAN spike times"
}