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PAG (Periaqueductal gray) projects to BLA (basal amygdaloid nucleus)

Species: Rat
Result: present
Method: retrograde tracer
Sign: unknown
Strength: weak
Evidence: Scattered retrogradely labeled neurons were found in the PAG after BLpc injection.
Source: Brain-wide connections of the parvicellular subdivision of the basolateral and basomedial amygdaloid nuclei in the rats
Frontiers in Neural Circuits, 2025
DOI 10.3389/fncir.2025.1575232 · PubMed 40352758 · PMC12061975, Fig. 3M–P
Licence: CC-BY-4.0
Named in the paper: “periaqueductal gray (PAG)” and “BLpc”
Made by: an AI model reading the paper (claude-opus-5-5, extract@0.3.0), 2026-10-10
Checked by: a second AI model (claude-opus-5-5) agrees, 2026-10-10
“Scattered PAG labeling after BLpc FG injection is reported.”
Status: proposed
Drafted and checked by AI models; it stays proposed until people have audited a sample of such claims.