bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 19, 2024
Abstract
The
acquisition
of
new
skills
is
facilitated
by
providing
individuals
with
feedback
that
reflects
their
performance.
This
process
creates
a
closed
loop
involves
processing
and
regulation
recalibration
to
promote
effective
training.
Functional
magnetic
resonance
imaging
(fMRI)-based
neurofeedback
unique
in
applying
this
principle
delivering
direct
on
the
self-regulation
brain
activity.
Understanding
how
feedback-driven
learning
occurs
requires
examining
evaluated
adjusts
response
signals.
In
pre-registered
mega-analysis,
we
re-analyzed
data
from
eight
intermittent
fMRI
studies
(N
=
153
individuals)
investigate
regions
where
activity
connectivity
are
linked
(i.e.,
after
feedback)
during
We
harmonized
scores
presented
training
these
computed
linear
associations
using
parametric
general
model
analyses.
observed
that,
processing,
were
positively
associated
(1)
reward
system,
dorsal
attention
network,
default
mode
cerebellum;
(2)
system-related
within
salience
network.
During
recalibration,
no
significant
between
either
or
associative
learning-related
connectivity.
Our
results
suggest
processed
supporting
theory
reinforcement
shapes
form
addition,
involvement
large-scale
networks
continuously
transitioning
evaluating
external
internally
assessing
adopted
cognitive
state,
suggests
higher-level
integral
type
learning.
findings
highlight
pivotal
role
performance-related
as
driving
force
learning,
potentially
extending
beyond
other
feedback-based
processes.
Key
Points
conducted
mega-analysis
integrating
examine
was
well
found
positive
blocks;
however,
additional
analyses
may
have
already
occurred
presentation.
Psychotherapy and Psychosomatics,
Год журнала:
2023,
Номер
92(2), С. 87 - 100
Опубликована: Янв. 1, 2023
Introduction:
Repetitive
negative
thinking
(RNT)
is
a
cognitive
process
focusing
on
self-relevant
and
experiences,
leading
to
poor
prognosis
of
major
depressive
disorder
(MDD).
We
previously
identified
that
connectivity
between
the
precuneus/posterior
cingulate
cortex
(PCC)
right
temporoparietal
junction
(rTPJ)
was
positively
correlated
with
levels
RNT.
Objective:
In
this
double-blind,
randomized,
sham-controlled,
proof-of-concept
trial,
we
employed
real-time
functional
magnetic
resonance
imaging
neurofeedback
(rtfMRI-nf)
delineate
neural
processes
may
be
causally
linked
RNT
could
potentially
become
treatment
targets
for
MDD.
Methods:
MDD-affected
individuals
were
assigned
either
active
(n
=
20)
or
sham
feedback
group
19).
measured
by
Ruminative
Response
Scale-brooding
subscale
(RRS-B)
before
1
week
after
intervention.
Results:
Individuals
in
but
not
showed
significant
reduction
RRS-B;
however,
greater
PCC-rTPJ
unrelated
RRS-B.
Exploratory
analyses
revealed
retrosplenial
(RSC)-rTPJ
yielded
more
pronounced
RRS-B
group.
Conclusions:
RtfMRI-nf
effective
reducing
Considering
underlying
mechanism
rtfMIR-nf,
RSC
rTPJ
part
network
(i.e.,
default
mode
network)
might
collectively
affect
intensity
Understanding
relationship
organization
targeted
changes
clinical
metrics,
such
as
RNT,
has
potential
guide
development
mechanism-based
NeuroImage,
Год журнала:
2025,
Номер
308, С. 121079 - 121079
Опубликована: Фев. 8, 2025
The
ventrolateral
prefrontal
cortex
(VLPFC)
plays
a
pivotal
role
in
emotion
regulation,
yet
the
effectiveness
of
neurofeedback
(NF)
training
targeting
VLPFC
remains
uncertain,
suggesting
significant
individual
differences
outcomes.
In
this
study,
we
aimed
to
clarify
these
by
enrolling
90
participants,
randomly
assigned
either
an
experimental
group
or
sham
(n
=
48/42).
Participants
underwent
VLPFC-NF
over
eight
sessions
across
two
consecutive
days,
while
those
received
random
signals
from
functional
near-infrared
spectroscopy
(fNIRS).
To
investigate
variability,
participants
were
further
categorized
as
high
low-efficacy
groups
based
on
their
efficiency,
determined
regression
slope
activity
sessions.
Our
results
revealed
reduction
negative
emotions
and
increased
during
regulation
high-efficacy
group,
compared
both
group.
Importantly,
benefit
reflected
decreased
negativity
ratings,
was
predicted
NF
efficiency.
Furthermore,
enhancement
fully
mediated
relationship
between
efficiency
benefits.
with
higher
exhibited
greater
engagement
leading
superior
emotional
Additionally,
linked
habitual
use
reappraisal
strategies
daily
life.
This
study
provides
novel
causal
evidence
that
can
effectively
enhance
highlighting
importance
findings
suggest
offers
promising
personalized
intervention
strategy
for
improving
potential
applications
treating
disorders.
research
underscores
approaches,
offering
new
avenues
tailored
therapeutic
interventions
future.
Neurogastroenterology & Motility,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 17, 2025
ABSTRACT
Introduction
Neuromodulation
of
cortical
brain
regions
associated
with
the
gut‐brain
axis
may
have
potential
to
modulate
gastric
function.
Previous
studies
shown
phase‐amplitude
coupling
between
electroencephalogram
(EEG)
alpha
band
frequency
insula
(Ins)
and
slow
wave
(GSW)
activity.
This
study
investigated
first
evidence
EEG‐neurofeedback
(EEG‐NF)
training
explore
its
effects
on
GSW
activity
heart
rate
variability
(HRV).
Methods
A
randomized
crossover
design
was
employed
20
healthy
participants
attending
two
separate
sessions
[
active‐training
:
uptraining
left
posterior
Insula
(LPIns)
active‐control
primary
visual
cortex
(PVC
Brodmann
area
17)]
following
baseline
recording
period.
5‐min
water
loading
test
(5WLT)
conducted
EEG‐NF
sessions.
Finally,
a
post
EEG‐NF/5WL
period
also
recorded.
Participants
were
blinded
program,
at
least
48
h
apart.
Electrocardiogram
(ECG),
EEG,
electrogastrogram
(EGG)
data
recorded
throughout
theexperiment.
In
addition,
duration
successful
NF
extracted.
Correlation
analysis
performed
assess
relationships
outcome
variables.
Results
Pearson
correlation
coefficient
revealed
significant
relationship
HRV
metrics
(RMSSD:
r
=
0.59;
p
0.005,
SI:
−0.59;
0.006)
in
LPIns
group
EGG‐gastric
rhythm
index
(
−0.40;
0.028)
PVC
group.
Moreover,
correlated
EEG
infraslow
over
anterior
Ins
0.45;
0.043),
right
−0.5;
0.022),
beta
0.44;
0.04)
0.04).
Significant
correlations
observed
connectivity
gamma
bands
interest.
Conclusion
The
demonstrated
association
HRV,
(activity
functional
connectivity)measures
did
not
show
negative
Gastric
Alimetry
Rhythm
Index
(GA‐RI)
5WLT
as
These
findings
underscore
importance
considering
an
important
variable
when
evaluating
efficacy
future
studies.
Journal of Clinical Medicine,
Год журнала:
2025,
Номер
14(7), С. 2421 - 2421
Опубликована: Апрель 2, 2025
Background:
Post-traumatic
stress
disorder
(PTSD)
manifests
through
distinct
symptom
clusters
that
can
respond
differently
to
treatments.
Neurofeedback
guided
by
the
Amygdala-derived-EEG-fMRI-Pattern
(Amyg-EFP-NF)
has
been
utilized
train
PTSD
patients
regulate
amygdala-related
activity
and
decrease
symptoms.
Methods:
We
conducted
a
combined
analysis
of
128
from
three
clinical
trials
Amyg-EFP-NF
evaluate
effects
across
(as
assessed
CAPS-5
subscales)
on
emotion
regulation
processing
(evaluated
ERQ).
Results:
significantly
reduced
severity
all
immediately
post-treatment,
with
improvements
maintained
at
three-month
follow-up.
The
arousal
reactivity
cluster
showed
continued
significant
improvement
during
Combined
effect
sizes
were
large
(η2p
=
0.23-0.35)
clusters.
Regression
revealed
processes
explained
17%
variance
in
follow-up
period.
Conclusions:
Reduction
symptoms
following
occurs
clusters,
emotional
potentially
serving
as
an
underlying
mechanism
action.
These
results
support
comprehensive
treatment
approach
for
continues
show
benefits
after
completion.
Depression and Anxiety,
Год журнала:
2025,
Номер
2025(1)
Опубликована: Янв. 1, 2025
Auditory
hallucinations
(AHs)
are
debilitating
and
often
treatment-resistant
symptoms
of
schizophrenia
(SZ).
Real-time
functional
magnetic
resonance
imaging
(fMRI)
neurofeedback
(NFB)
is
emerging
as
a
flexible
brain
circuit-based
tool
for
targeting
AH
via
self-modulation
activity.
A
better
understanding
what
baseline
characteristics
predict
NFB
success
will
enhance
its
clinical
utility.
Previous
work
suggests
that
symptomology
implicates
measures
across
multiple
modalities,
including
T1
structural
MRI
(sMRI),
diffusion-weighted
(dMRI),
resting-state
fMRI
(rsfMRI).
Specifically,
severity
treatment
response
associated
with
thinner
superior
temporal
gyrus
(STG),
dorsolateral
prefrontal
cortex
(DLPFC),
reduced
white
matter
integrity
in
tracts
connecting
regions
implicated
SZ
symptomatology,
increased
within-default
mode
network
(DMN)
connectivity,
DMN-DLPFC
anticorrelation.
In
this
study,
we
tested
the
individual
combined
contributions
multimodal
features
prediction
change
after
adults
(N
=
25,
36.1
±
10.0
years,
24%
females)
spectrum
disorders
(SZ
or
schizoaffective
disorder)
frequent
medication-resistant
AH.
Participants
underwent
scan
(including
sMRI,
dMRI,
rsfMRI)
were
randomly
assigned
to
receive
from
their
STG
(n
12,
real
condition)
motor
(MC)
13,
sham
condition).
was
operationalized
improvement
NFB.
We
found
higher
severity,
greater
thickness,
decreased
dorsal
cingulum
integrity,
within-DMN
anticorrelation
each
individually
correlated
reduction
severity.
However,
regression
model,
connectivity
emerged
only
independent
variable
explained
unique
variance
change.
These
results
suggest
specific
rsfMRI
measure,
namely
may
be
promising
predictor
reducing
support
precision
medicine
approach.
Trial
Registration:
ClinicalTrials.gov
identifier:
NCT03504579.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 21, 2025
Abstract
In
neurofeedback
training,
select
neurons
–
of
the
billions
that
comprise
brain
are
able
to
adapt
their
activity
produce
a
desired
behavior,
even
though
feedback
signal
is
low-dimensional.
However,
extent
individual
alter
within
context
population
unclear.
Using
brain-computer
interface
in
monkeys
(n=2;
Macaca
mulatta
),
we
tested
how
tuning
changed
response
various
perturbations.
Overall,
found
co-varied
most
with
and
those
contributed
behavior
prior
perturbation
were
resistant
change–
regardless
type.
The
degree
which
counteracted
applied
explained
daily
differences
well
collectively
produced
adapted
behavior.
Our
work
provides
important
insight
into
population-level
constraints
impact
ability
support
behavioral
flexibility.