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PB (Parabrachial nucleus) projects to CEA (central amygdaloid nucleus)

All claims for this connection
Species
Rat
Result
present
Method
anterograde tracer
Sign
unknown
Evidence
After CaMKIIa-ChR2-eYFP virus injection into the external lateral parabrachial nucleus, labelled terminals were found in the central amygdala, in the lateral division and more prominently in the capsular division.
Source

Kappa Opioid Receptor Blockade in the Amygdala Mitigates Pain Like-Behaviors by Inhibiting Corticotropin Releasing Factor Neurons in a Rat Model of Functional Pain

Frontiers in Pharmacology, 2022

DOI 10.3389/fphar.2022.903978 · PubMed 35694266 · PMC9177060, Fig. 2A,B; Methods 5.7.3, 5.8

Licence: CC-BY-4.0

Named in the paper
“external parabrachial nucleus (PB)” and “lateral and capsular division of the CeA”
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

“Virally labelled terminals from the external lateral PB were seen in the lateral and, more strongly, the capsular CeA, as described in Methods 5.7.3 and with histology in 5.8.”

Status

proposed

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