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HY (Hypothalamus) projects to PAG (Periaqueductal gray)

All claims for this connection
Species
Rat
Result
present
Method
retrograde tracer
Sign
unknown
Evidence
CTb/TH double-labelled neurons were found in the A11 group, both ipsilateral and contralateral, after dlPAG injections. In some cases A11 was the second largest source.
Measurements
  • fraction of labelled neurons: 0.28, n = 1
  • fraction of labelled neurons: 0.22, n = 1
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, A11 cell group; Table 1; Fig. 4
Named in the paper
“A11 dopaminergic 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 A11 section reports double-labelled cells ipsi- and contralaterally and gives A11 as second source at 28% (R25) and 22% (R30).”

Status

proposed

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