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@ARTICLE{Zajzon:943451,
author = {Zajzon, Barna and Dahmen, David and Morrison, Abigail and
Duarte, Renato},
title = {{S}ignal denoising through topographic modularity of neural
circuits},
journal = {eLife},
volume = {12},
issn = {2050-084X},
address = {Cambridge},
publisher = {eLife Sciences Publications},
reportid = {FZJ-2023-01023},
pages = {e77009},
year = {2023},
abstract = {Information from the sensory periphery is conveyed to the
cortex via structured projection pathways that spatially
segregate stimulus features, providing a robust and
efficient encoding strategy. Beyond sensory encoding, this
prominent anatomical feature extends throughout the
neocortex. However, the extent to which it influences
cortical processing is unclear. In this study, we combine
cortical circuit modeling with network theory to demonstrate
that the sharpness of topographic projections acts as a
bifurcation parameter, controlling the macroscopic dynamics
and representational precision across a modular network. By
shifting the balance of excitation and inhibition,
topographic modularity gradually increases task performance
and improves the signal-to-noise ratio across the system. We
demonstrate that in biologically constrained networks, such
a denoising behavior is contingent on recurrent inhibition.
We show that this is a robust and generic structural feature
that enables a broad range of behaviorally-relevant
operating regimes, and provide an in-depth theoretical
analysis unravelling the dynamical principles underlying the
mechanism.},
cin = {INM-6 / IAS-6 / INM-10},
ddc = {600},
cid = {I:(DE-Juel1)INM-6-20090406 / I:(DE-Juel1)IAS-6-20130828 /
I:(DE-Juel1)INM-10-20170113},
pnm = {5232 - Computational Principles (POF4-523) / SMHB -
Supercomputing and Modelling for the Human Brain
(HGF-SMHB-2013-2017) / neuroIC002 - Recurrence and
stochasticity for neuro-inspired computation
(EXS-SF-neuroIC002) / HBP SGA3 - Human Brain Project
Specific Grant Agreement 3 (945539)},
pid = {G:(DE-HGF)POF4-5232 / G:(DE-Juel1)HGF-SMHB-2013-2017 /
G:(DE-82)EXS-SF-neuroIC002 / G:(EU-Grant)945539},
typ = {PUB:(DE-HGF)16},
pubmed = {36700545},
UT = {WOS:000943249500001},
doi = {10.7554/eLife.77009},
url = {https://juser.fz-juelich.de/record/943451},
}