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@ARTICLE{Schller:1050001,
author = {Schüller, Thomas and Mengotti, Paola and Zabicki, Adam and
Huys, Daniel and Barbe, Michael T and Fink, Gereon R and
Visser-Vandewalle, Veerle and Vossel, Simone and Baldermann,
Juan Carlos},
title = {{A}lterations of sensorimotor predictive processes and
their electrophysiological signatures in {T}ourette
syndrome},
journal = {Brain communications},
volume = {7},
number = {6},
issn = {2632-1297},
address = {[Oxford]},
publisher = {Oxford University Press},
reportid = {FZJ-2025-05715},
pages = {fcaf458},
year = {2025},
note = {This work was funded by the German Research Foundation (SFB
1451 – ID 431549029). J.C.B. is funded by the Else
Kroner-Fresenius Stiftung $(2022_EKES.23).$},
abstract = {People with Tourette syndrome exhibit excessive motor
actions known as tics. An aversive sensation called the
premonitory urge often precedes these tics, leading to the
conceptualization of Tourette syndrome as a sensorimotor
disorder. In typical individuals, motor actions adapt
flexibly to changes in the predictability of sensory cues.
However, it remains unclear whether such sensorimotor
predictions are altered in Tourette syndrome and, if so,
which neural processes might underlie these changes. This
study examined 30 individuals with Tourette syndrome and 30
control participants while recording EEG. Participants
performed a motor cueing version of the Posner task,
requiring behavioural adjustments to varying levels of cue
predictability. Notably, while control participants
exhibited the expected interaction between validity and cue
predictability on motor responses, this effect was absent in
individuals with Tourette syndrome. Neural signatures of
flexible predictability-dependent processing were
characterized by applying a Bayesian observer model to
estimate trial-wise subjective beliefs about cue
predictability from response speed and using these
model-derived cue predictability estimates in single-trial
regression analyses with EEG data. Our findings revealed
that model-derived cue predictability modulated P3a
amplitude, P3b onset and P3b amplitude differentially.
Importantly, P3b amplitude modulations reflected beliefs
about cue predictability, which were diminished in
participants with Tourette syndrome. Overall, our results
indicate that individuals with Tourette syndrome exhibit
abnormal behavioural adaptation to the changing
predictability of motor cues, suggesting an impaired
processing of sensorimotor predictions. At the neural level,
this is reflected by impaired activity associated with
updating stimulus–response associations.},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {5251 - Multilevel Brain Organization and Variability
(POF4-525) / DFG project G:(GEPRIS)431549029 - SFB 1451:
Schlüsselmechanismen normaler und krankheitsbedingt
gestörter motorischer Kontrolle (431549029)},
pid = {G:(DE-HGF)POF4-5251 / G:(GEPRIS)431549029},
typ = {PUB:(DE-HGF)16},
doi = {10.1093/braincomms/fcaf458},
url = {https://juser.fz-juelich.de/record/1050001},
}