Extracting interpretable signatures of whole-brain dynamics through systematic comparison
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 12, 2024
The
brain's
complex
distributed
dynamics
are
typically
quantified
using
a
limited
set
of
manually
selected
statistical
properties,
leaving
the
possibility
that
alternative
dynamical
properties
may
outperform
those
reported
for
given
application.
Here,
we
address
this
limitation
by
systematically
comparing
diverse,
interpretable
features
both
intra-regional
activity
and
inter-regional
functional
coupling
from
resting-state
magnetic
resonance
imaging
(rs-fMRI)
data,
demonstrating
our
method
case-control
comparisons
four
neuropsychiatric
disorders.
Our
findings
generally
support
use
linear
time-series
analysis
techniques
rs-fMRI
analyses,
while
also
identifying
new
ways
to
quantify
informative
fMRI
structures.
While
simple
representations
performed
surprisingly
well
(e.g.,
within
single
brain
region),
combining
with
improved
performance,
underscoring
distributed,
multifaceted
changes
in
comprehensive,
data-driven
introduced
here
enables
systematic
identification
interpretation
quantitative
signatures
multivariate
applicability
beyond
neuroimaging
diverse
scientific
problems
involving
time-varying
systems.
Language: Английский
THE PROMISE OF INVESTIGATING NEURAL VARIABILITY IN PSYCHIATRIC DISORDERS
Biological Psychiatry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 1, 2025
Language: Английский
Cortical Surface Spatial Analysis Reveals Altered Brain Functional Network Topology in T2DM With Mild Cognitive Impairment
Yanfeng Fan,
No information about this author
Jing Tian,
No information about this author
Xinfeng Yu
No information about this author
et al.
Brain and Behavior,
Journal Year:
2025,
Volume and Issue:
15(4)
Published: April 1, 2025
ABSTRACT
Objective
Approximately
45.0%
of
patients
who
have
type
2
diabetes
mellitus
(T2DM)
exhibit
mild
cognitive
impairment
(MCI).
However,
the
specific
alternations
in
T2DM
with
MCI
(T2DM‐MCI)‐related
brain
functional
networks
(BFN)
remain
unclear.
Therefore,
present
study
aimed
to
investigate
alterations
topological
properties
BFN
and
without
MCI,
utilizing
a
cortical
surface‐based
graph
theory
analysis
resting‐state
magnetic
resonance
imaging
data.
Methods
Neuropsychological
performance
BFNs
were
determined
64
T2DM‐MCI
patients,
58
(T2DM‐noMCI),
78
healthy
controls
(HC).
Moreover,
we
conducted
correlation
stepwise
multiple
linear
regression
analysis.
Results
The
group
showed
increased
global
efficiency
decreased
shortest
path
length
compared
T2DM‐noMCI.
In
left
posterior
cingulate,
exhibited
higher
nodal
T2DM‐noMCI
group.
Additionally,
both
degree
centrality
significantly
lower
than
HC.
Degree
basal
ganglia
elevated
groups.
Alterations
these
regions
related
function
scores.
Conclusion
suggest
that
attributes
this
region
may
be
involved
neurophysiopathological
mechanisms
injury
T2DM.
Conversely,
cingulate
gyrus
indicate
its
potential
as
neuroimaging
biomarker
patients.
Language: Английский