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@ARTICLE{Niedernhuber:916032,
author = {Niedernhuber, Maria and Raimondo, Federico and Sitt, Jacobo
D. and Bekinschtein, Tristan A.},
title = {{S}ensory target detection at local and global timescales
reveals a hierarchy of supramodal dynamics in the human
cortex},
journal = {The journal of neuroscience},
volume = {42},
number = {46},
issn = {0270-6474},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2022-05878},
pages = {JN-RM-0658-22},
year = {2022},
abstract = {To ensure survival in a dynamic environment, the human
neocortex monitors input streams from different sensory
organs for important sensory events. Which principles govern
whether different senses share common or modality-specific
brain networks for sensory target detection? We examined
whether complex targets evoke sustained supramodal activity
while simple targets rely on modality-specific networks with
short-lived supramodal contributions. In a series of
hierarchical multisensory target detection studies (n = 77,
of either sex) using EEG, we applied a temporal
cross-decoding approach to dissociate supramodal and
modality-specific cortical dynamics elicited by rule-based
global and feature-based local sensory deviations within and
between the visual, somatosensory, and auditory modality.
Our data show that each sense implements a cortical
hierarchy orchestrating supramodal target detection
responses, which operate at local and global timescales in
successive processing stages. Across different sensory
modalities, simple feature-based sensory deviations
presented in temporal vicinity to a monotonous input stream
triggered a mismatch negativity-like local signal which
decayed quickly and early, whereas complex rule-based
targets tracked across time evoked a P3b-like global neural
response which generalized across a late time window.
Converging results from temporal cross-modality decoding
analyses across different datasets, we reveal that global
neural responses are sustained in a supramodal higher-order
network, whereas local neural responses canonically thought
to rely on modality-specific regions evolve into short-lived
supramodal activity. Together, our findings demonstrate that
cortical organization largely follows a gradient in which
short-lived modality-specific as well as supramodal
processes dominate local responses, whereas higher-order
processes encode temporally extended abstract supramodal
information fed forward from modality-specific cortices.},
cin = {INM-7},
ddc = {610},
cid = {I:(DE-Juel1)INM-7-20090406},
pnm = {5251 - Multilevel Brain Organization and Variability
(POF4-525)},
pid = {G:(DE-HGF)POF4-5251},
typ = {PUB:(DE-HGF)16},
pubmed = {36223999},
UT = {WOS:000903701700013},
doi = {10.1523/JNEUROSCI.0658-22.2022},
url = {https://juser.fz-juelich.de/record/916032},
}