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digital-drosophila/docs/progress/phase4ab-technical-results.md
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Phase 4AB — calyx contact-scope diagnostic

Status: COMPLETE-SCOPE-COUNTERFACTUAL / NO-DYNAMICS-CANDIDATE. Diagnostic interventions only; no calibrated biological inhibition, no training, no parameter winner.

Eligible PNs: 229/259. CA mask: 20263 edges / 337099 contacts. Affected KCs: 3760. Mixed-ROI affected edges: 3323; retained other contacts: 28975. Broader PN→KC control: 21882 edges / 384555 contacts. All-fast-PN-output control: 116211 edges / 1268111 contacts.

Odor Condition Active KC KC late spikes KC82312 late VA6 late
ethyl (R)-(-)-3-hydroxybutanoate frozen_reference 160 114 60 213
ethyl (R)-(-)-3-hydroxybutanoate calyx_PN_KC_contact_block 1 39 0 214
ethyl (R)-(-)-3-hydroxybutanoate all_PN_KC_block 1 39 0 214
ethyl (R)-(-)-3-hydroxybutanoate whole_PN_output_block 0 0 0 0
3-penten-2-one frozen_reference 172 118 60 213
3-penten-2-one calyx_PN_KC_contact_block 2 39 0 213
3-penten-2-one all_PN_KC_block 1 39 0 213
3-penten-2-one whole_PN_output_block 0 0 0 0
(2R)-hexan-2-ol frozen_reference 144 117 61 213
(2R)-hexan-2-ol calyx_PN_KC_contact_block 1 39 0 213
(2R)-hexan-2-ol all_PN_KC_block 1 39 0 213
(2R)-hexan-2-ol whole_PN_output_block 0 0 0 0
gamma-propyl-gamma-butyrolactone frozen_reference 151 117 60 212
gamma-propyl-gamma-butyrolactone calyx_PN_KC_contact_block 2 39 0 212
gamma-propyl-gamma-butyrolactone all_PN_KC_block 1 40 0 212
gamma-propyl-gamma-butyrolactone whole_PN_output_block 0 0 0 0
2-methyl butyl acetate frozen_reference 139 118 61 213
2-methyl butyl acetate calyx_PN_KC_contact_block 1 39 0 212
2-methyl butyl acetate all_PN_KC_block 1 39 0 212
2-methyl butyl acetate whole_PN_output_block 0 0 0 0
ethyl (S)-(+)-3-hydroxybutanoate frozen_reference 163 119 61 214
ethyl (S)-(+)-3-hydroxybutanoate calyx_PN_KC_contact_block 1 39 0 214
ethyl (S)-(+)-3-hydroxybutanoate all_PN_KC_block 1 39 0 214
ethyl (S)-(+)-3-hydroxybutanoate whole_PN_output_block 0 0 0 0

Late means 500–1,000 ms; 120 ms old calibration odor input; one seed, six old odors. No held-out generalization claim. Identical scheduled requests across conditions. Delivered request-associated output differences versus reference: 459 (summed over all comparisons). See per-trial table; this is state/refractory feedback, not a changed RNG.

Interpretation limits

CA selection uses exact primary_post labels plus matched APL→PN/ROI metadata, not bouton identities or inferred receptors. Unknown ROIs are not reclassified. Whole-PN control removes fast output, not somatic spikes or the frozen graded APL input. It is not a complete PN knockout. Reduction/silencing is not restored information or associative memory. No condition becomes a formal model. Fixed-event replay freezes other recorded events/APL; dynamic trials allow natural recurrent feedback. Local-inhibition motivation: Prisco et al., Amin et al.. These sources do not establish the complete-block operator as physiological.

Verification

Six original trials reproduced exactly (whole spike events, watched state and final counts/V/g). Four first-odor repeats exact. Five deterministic-v2 frozen reference trials exact. Finite state throughout. Original 230,239 files and both Phase 4AA manifests rechecked before/after. Base CSR/count/sign, frozen LIF/APL, eligibility-v2 and 14,232 plastic mask preserved. Timing includes diagnostic CPU/GPU observation overhead and is not a runtime speed benchmark. ComfyUI was not stopped or unloaded. Top-level acceptance gates remain 5/10 (50%); anatomical diagnosis is not evidence of learning success.