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@PHDTHESIS{Kraljevic:1043183,
author = {Kraljevic, Nevena},
title = {{B}rain–behaviour relationships and individual
variability in cognitive and emotional processing},
school = {HHU Düsseldorf},
type = {Dissertation},
reportid = {FZJ-2025-02791},
pages = {142},
year = {2025},
note = {Dissertation, HHU Düsseldorf, 2025},
abstract = {Human experience and behaviour is subject to multiple
different mental processes,which can be separated into
cognitive and socio-affective processes. Many studies
investigate how experience and behaviour is linked to brain
structure and function,and also how much in]luence can be
attributed to our genetic makeup. However, littleis known
about how behavioural domains are subject to different
in]luencing factorsof inter-individual differences of the
brain. In particular, how overlapping geneticinfluences
exhibit in brain structure and which in]luence different
functional task states drive in predictability of individual
behaviour. Therefore, in my dissertation I investigated the
phenotypic and genetic correlations of cognitive and
affective traits and brain structure (cortical thickness,
surface area and subcortical volumes; study1). I further
examined to what extent the correspondence of functional
network priorsand task states with behavioural target
domains in]luenced the predictability of individual
performance in cognitive, social, and affective tasks (study
2).Using phenotypic correlation and heritability-analysis
the ]irst study investigated heritability and genes as
in]luencing factors on inter-individual differences of
thebrain. Cognition revealed several associations with brain
morphology, while trait affect revealed only few signi]icant
correlations with subcortical volumes and localcortical
thickness, where it overlaps in left superior frontal cortex
with cognition.Decomposing the phenotypic association into
genetic and environmental components, revealed that the
associations were accounted for by shared geneticeffects
between the traits. Using functional correlation and
predictability of task statesand network priors the second
study investigated state- and network-specificity
asinfluencing factors on brain–behaviour relationships, by
predicting individual performance in cognitive, social, and
affective tasks. Predictions from whole-brain FC were
slightly better than those from FC in task-specific
networks, and a slight bene]it of predictions based on FC
from task versus resting state was observed for performance
in the cognitive domain.With my dissertation I provide an
integrative model of how cognition and affect relate to the
human brain. By combining insights from structural anatomy,
heritability modelling, and functional connectivity-based
prediction, my results reveal that these traditionally
distinct domains share common neural substrates. The
superior frontal cortex has been identified as a heritable
anatomical hub for both cognitive andaffective traits.
However, multivariate FC patterns during both task and
resting states carried only moderate predictability of
individual performance levels of cognition
andsocio-affective processes, manifesting nevertheless the
in]luence of brain state and network dynamics in shaping
individual behaviour. In sum, with these studies Ireplicated
previous ]indings, but also extended insights into the
interplay of cognitive and socio-affective processes with
brain–behaviour relationships, and how different factors
influence inter-individual differences in the brain.},
cin = {INM-7},
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)11},
doi = {10.34734/FZJ-2025-02791},
url = {https://juser.fz-juelich.de/record/1043183},
}