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PH (Posterior hypothalamic nucleus) projects to PAG (Periaqueductal gray)

All claims for this connection
Species
Rat
Result
present
Method
retrograde tracer
Sign
unknown
Evidence
TH-positive neurons retrogradely labelled from the dlPAG lay in the posterior hypothalamic area, one of three extended A10 sites. The A10 group as a whole supplied 22-30% of double-labelled cells in three cases.
Source

A discrete dopaminergic projection from the incertohypothalamic A13 cell group to the dorsolateral periaqueductal gray in rat

Frontiers in Neuroanatomy, 2013

DOI 10.3389/fnana.2013.00041 · PubMed 24367297 · PMC3853869, Results, A10 cell group; Fig. 5A
Named in the paper
“posterior hypothalamic area (PHA), extended A10 cell group” and “dlPAG”
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

“The posterior hypothalamic area is one of three extended A10 sites holding double-labelled cells, and A10 gave 22-30% in three cases.”

Status

proposed

Drafted and checked by AI models; it stays proposed until people have audited a sample of such claims.