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

Species: Rat
Result: present
Method: retrograde tracer
Sign: unknown
Strength: strong
Evidence: Fluoro-gold injected into the right CeA retrogradely labeled many neurons across the rostrocaudal LPB, on both sides but mostly ipsilateral. About 86% of these FG-labeled cells were CGRP-immunoreactive, and about 11% were also labeled from a VTA injection, indicating collateral projections.
Source: Collateral Projections from the Lateral Parabrachial Nucleus to the Central Amygdaloid Nucleus and the Ventral Tegmental Area in the Rat
The Anatomical Record, 2018
DOI 10.1002/ar.23983 · PubMed 30332715 · PMC6618262, Results, 'Neurons in the LPB Sent Collateral Projections to the CeA and VTA'; Fig. 2; Tables 1-2
Licence: CC-BY-NC-ND-4.0
Named in the paper: “lateral parabrachial nucleus (LPB)” and “central amygdaloid nucleus (CeA)”
Made by: an AI model reading the paper (claude-opus-5-5, extract@0.3.0), 2026-10-08
Checked by: a second AI model (claude-opus-5-5) agrees, 2026-10-08
“The paper's own FG retrograde tracing from CeA labeled dense ipsilateral-predominant LPB neurons, 85.57% of them CGRP-positive and 10.78% double-labeled, as reported in the Results sections and tables cited.”
Status: proposed
Drafted and checked by AI models; it stays proposed until people have audited a sample of such claims.