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@ARTICLE{Haetzel:281910,
author = {Haetzel, Laura M. and Gründemann, Jan},
title = {{I}nhibitory inputs from thalamus promote resilient spiking
in tail of striatum},
journal = {iScience},
volume = {28},
number = {11},
issn = {2589-0042},
address = {St. Louis},
publisher = {Elsevier},
reportid = {DZNE-2025-01252},
pages = {113880},
year = {2025},
abstract = {Thalamic afferents form glutamatergic synapses with
striatal medium spiny neurons (MSNs). These projections are
involved in complex learning processes and have primarily
been studied in rostral striatum. Caudal regions, such as
tail of striatum (TS), have only recently gained attention.
Medial geniculate body (auditory thalamus; MGB) provides
functional excitatory inputs to MSNs in TS; however, it is
unclear how MGB regulates striatal output signals. We
therefore performed optogenetics-assisted circuit mapping in
ex vivo brain slices to examine how MGB modulates neuronal
output in TS MSNs. Whole-cell recordings revealed that
activation of MGB terminals increases MSN firing
specifically at high levels of postsynaptic depolarization.
In addition to the well-described excitatory thalamostriatal
projections, we identified a sparse population of GABAergic
projection neurons in higher-order MGB that inhibit TS MSNs
through a GABAB-receptor-mediated mechanism. Together, these
results provide a conceptual framework for MGB-driven
state-dependent modulation of striatal output signals.},
cin = {AG Gründemann},
ddc = {050},
cid = {I:(DE-2719)5000069},
pnm = {351 - Brain Function (POF4-351)},
pid = {G:(DE-HGF)POF4-351},
experiment = {EXP:(DE-2719)LMF-20190308},
typ = {PUB:(DE-HGF)16},
doi = {10.1016/j.isci.2025.113880},
url = {https://pub.dzne.de/record/281910},
}