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MEZ (Hypothalamic medial zone) synapses onto PAG (Periaqueductal gray)

Species: Mouse
Result: present
Method: transsynaptic tracer
Sign: unknown
Evidence: Rabies-labelled input neurons to the PAG vocal gating circuit were found in the premammillary nucleus of the medial hypothalamus.
Source: Circuit and synaptic organization of forebrain-to-midbrain pathways that promote and suppress vocalization
eLife, 2020
DOI 10.7554/elife.63493 · PubMed 33372655 · PMC7793624, Fig. 1—figure supplement 3E
Licence: CC-BY-4.0
Named in the paper: “premammillary nucleus” and “PAG-USV neurons and GABAergic PAG neurons”
Made by: an AI model reading the paper (claude-opus-5, extract@0.3.0), 2026-10-10
Checked by: a second AI model (claude-opus-5-5) agrees, 2026-10-10
“Fig. 1—figure supplement 3E shows premammillary input neurons.”
Status: proposed
Drafted and checked by AI models; it stays proposed until people have audited a sample of such claims.