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@ARTICLE{Nikbakht:268784,
author = {Nikbakht, Negar and Pofahl, Martin and Miguel-López,
Albert and Kamali, Fateme and Tchumatchenko, Tatjana and
Beck, Heinz},
title = {{E}fficient encoding of aversive location by {CA}3
long-range projections.},
journal = {Cell reports},
volume = {43},
number = {3},
issn = {2211-1247},
address = {[New York, NY]},
publisher = {Elsevier},
reportid = {DZNE-2024-00327},
pages = {113957},
year = {2024},
abstract = {Memorizing locations that are harmful or dangerous is a key
capability of all organisms and requires an integration of
affective and spatial information. In mammals, the dorsal
hippocampus mainly processes spatial information, while the
intermediate to ventral hippocampal divisions receive
affective information via the amygdala. However, how spatial
and aversive information is integrated is currently unknown.
To address this question, we recorded the activity of
hippocampal long-range CA3 axons at single-axon resolution
in mice forming an aversive spatial memory. We show that
intermediate CA3 to dorsal CA3 (i-dCA3) projections rapidly
overrepresent areas preceding the location of an aversive
stimulus due to a spatially selective addition of new
place-coding axons followed by spatially non-specific
stabilization. This sequence significantly improves the
encoding of location by the i-dCA3 axon population. These
results suggest that i-dCA3 axons transmit a precise,
denoised, and stable signal indicating imminent danger to
the dorsal hippocampus.},
keywords = {Mice / Animals / Hippocampus / Axons / Spatial Memory /
Mammals / CA3 subfield (Other) / CP: Neuroscience (Other) /
aversive learning (Other) / dorsal hippocampus (Other) /
place coding (Other) / ventral hippocampus (Other)},
cin = {Bonn common},
ddc = {610},
cid = {I:(DE-2719)6000011},
pnm = {899 - ohne Topic (POF4-899)},
pid = {G:(DE-HGF)POF4-899},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:38489262},
doi = {10.1016/j.celrep.2024.113957},
url = {https://pub.dzne.de/record/268784},
}