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CA1 (Field CA1) projects to BLA (basal amygdaloid nucleus)

All claims for this connection
Species
Rat
Result
present
Method
retrograde tracer
Sign
unknown
Evidence
A retrograde AAV driving mCherry under a CaMKIIa promoter was placed in the BLA and labelled mCherry-positive cells in ventral CA1, showing that excitatory vCA1 neurons send axons to the BLA; a subset of these labelled cells co-expressed c-Fos after unconditioned-stimulus retrieval of remote fear memory.
Source

A ventral hippocampus-basolateral amygdala circuit regulates the unconditioned stimulus retrieval-induced reconsolidation of remote fear memory

Journal of Advanced Research, 2026

DOI 10.1016/j.jare.2025.10.015 · PubMed 41086982 · PMC13316356, Fig. 4b, 4d; Methods (retrograde non-transsynaptic tracing)

Licence: CC-BY-NC-ND-4.0

Named in the paper
“vCA1” and “BLA”
Made by
an AI model reading the paper (claude-opus-5, extract@0.3.0), 2026-10-09
Checked by

a second AI model (claude-opus-5) agrees, 2026-10-09

“Retrograde CaMKIIa-mCherry from BLA labelled vCA1 neurons, with c-Fos co-labelling after US retrieval, as stated for Fig. 4d.”

Status

proposed

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