medRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 23, 2024
Abstract
Accumulating
evidence
from
animal
and
human
studies
suggests
a
fear-regulating
potential
of
the
neuropeptide
oxytocin
(OT),
yet
clinical
translation
into
novel
interventions
for
pathological
fear
requires
behavioral
neurofunctional
characterization
under
close-to-real
life
conditions.
Here,
we
combined
naturalistic
fMRI-design
inducing
high
immersive
experience
in
social
non-social
contexts
with
preregistered
between-subjects
randomized
double-blind
placebo-controlled
intranasal
OT
trial
(24
IU,
n
=
67
healthy
men).
reduced
subjective
small
or
moderate
effect
sizes,
respectively.
In
contexts,
enhanced
left
middle
cingulate
cortex
(lMCC)
activation
its
functional
connectivity
contralateral
amygdala,
both
neural
indices
significantly
inversely
associated
following
OT.
On
network
level,
communication
between
dorsal
attention
(DAN)
fronto-parietal
(FPN)
default-mode
(DMN)
as
well
on
more
fine-grained
level
brain-wide
communication.
These
findings
indicate
fear-reducing
conditions
pronounced
effects
suggesting
treatment
value
disorders
context-related
excessive
fear.
ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP),
Journal Year:
2024,
Volume and Issue:
unknown, P. 2016 - 2020
Published: March 18, 2024
Identifying
mild
cognitive
impairment
(MCI)
is
vital
for
Alzheimer's
disease
prevention.
As
neurodegenerative
diseases
progress,
synchronous
activity
in
electroencephalography
(EEG)
-
indicating
functional
connectivity
changes
due
to
neural
system
deterioration.
Thus,
developing
geometric
learning
decode
the
brain
structure
essential.
Techniques
such
as
graph
networks
and
Riemannian
manifolds
show
potential
analyzing
non-Euclidean
data.
However,
existing
approaches
neglect
combine
with
temporal
dependence
still
remain
insufficient
MCI
detection.
This
paper
proposes
Brain
Network
sequence-driven
Manifold-based
Transformer
(BNMTrans)
identify
patterns
from
EEG
BNMTrans
leverages
its
strengths
by
extracting
features
sequential
through
self-attention
mechanism,
guided
correlations
within
manifold.
By
integrating
long-term
dynamics
structural
relationships
manifold
space
based
on
connectivity,
this
approach
outperforms
others
feature
comparisons
state-of-the-art
evaluations
clinical
data
89
subjects
(46
MCI,
43
healthy
controls)
at
a
local
hospital.
Our
work
has
significance
both
management
technical
progression
field.
Journal of Clinical Medicine,
Journal Year:
2025,
Volume and Issue:
14(10), P. 3308 - 3308
Published: May 9, 2025
Background:
Cognitive
impairment
is
a
common
feature
of
schizophrenia
spectrum
disorders
and
has
been
associated
with
functional
disruption
preceding
the
onset
psychosis.
Understanding
how
cognitive
deficits
interact
clinical
symptoms
functioning
in
early
psychosis
remains
challenging.
In
this
study,
we
aim
to
investigate
whether
distinct
“cognitive
signature”
characterizes
at
Material
Methods:
Clinical,
cognitive,
data
were
collected
from
101
first
episode
patients
their
hospitalization.
Stepwise
regression
models
used
identify
predictors
global
symptom
severity
time
onset,
as
well
diagnostic
outcomes
discharge.
Path
analysis
was
explore
relationship
among
severity,
cognition,
outcomes.
Results:
Deficits
visual
memory
selectively
predictive
lower
higher
onset.
Reduced
visual-spatial
abilities
also
unemployment
hospitalization
predicted
non-affective
diagnosis
found
that
fully
mediated
between
negative
level
functioning.
Conclusions:
Impairment
cognition
seems
be
uniquely
mediate
The
results
might
indicate
primary
relevance
aspects
marking
exacerbation
This
have
implications
for
detection
inform
treatment
plans.
Abstract
Aims
Limited
understanding
exists
regarding
the
neurobiological
mechanisms
underlying
non‐suicidal
self‐injury
(NSSI)
and
suicide
attempts
(SA)
in
depressed
adolescents.
The
maturation
of
brain
network
is
crucial
during
adolescence,
yet
abnormal
alternations
adolescents
with
NSSI
or
NSSI+SA
remain
poorly
understood.
Methods
Resting‐state
functional
magnetic
resonance
imaging
data
were
collected
from
114
adolescents,
classified
into
three
groups:
clinical
control
(non‐self‐harm),
only,
based
on
self‐harm
history.
resting‐state
connectivity
(RSFC)
identified
through
support
vector
machine‐based
classification.
Results
Convergent
alterations
predominantly
centered
inter‐network
RSFC
between
Limbic
core
neurocognitive
networks
(SalVAttn,
Control,
Default
networks).
Divergent
group
primarily
focused
Visual,
Limbic,
Subcortical
networks.
Additionally,
severity
depressive
symptoms
only
showed
a
significant
correlation
altered
RSFCs
DorsAttn
Visual
networks,
strengthening
fact
that
increased
depression
alone
does
not
fully
explain
observed
FC
group.
Conclusion
suggest
shared
mechanism
along
self‐destructiveness
continuum.
may
indicate
biomarkers
differentiating
risk
for
SA,
informing
neurobiologically
guided
interventions.