bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 16, 2024
Abstract
Variability
in
visual
perception
response
to
consistent
stimuli
is
a
fundamental
phenomenon
linked
fluctuations
prestimulus
low-frequency
neural
oscillations—particularly
the
alpha
(8–13
Hz)
and
beta
(13–30
bands—typically
measured
by
their
power
electroencephalography
(EEG)
signals.
However,
causal
role
of
these
remains
unestablished.
In
this
study,
we
investigated
whether
causally
affect
using
transcranial
random
noise
stimulation
(tRNS).
sham-controlled,
single-blind,
within-subject
design,
29
participants
performed
detection
task
while
receiving
occipital
tRNS.
Online
functional
near-infrared
spectroscopy
(fNIRS)
was
used
measure
cortical
excitability
during
stimulation,
offline
EEG
signals
were
collected
after
stimulation.
Mental
fatigue
incorporated
as
state-dependent
factor
influencing
tRNS
effects.
Our
findings
demonstrate
that,
primarily
under
low
states,
increased
(indicated
fNIRS
oxyhemoglobin
amplitude),
decreased
subsequent
power,
consequently
reduced
contrast
threshold
(VCT),
indicating
enhanced
perception.
Sensitivity
analysis
revealed
that
oscillations
contributed
more
significantly
than
fatigue.
Additionally,
effects
may
result
from
different
sensitivities
VCT
across
states.
These
results
provide
evidence
linking
underscore
importance
considering
brain
states
neuromodulation
research.
study
advances
understanding
mechanisms
underlying
suggests
potential
therapeutic
applications
targeting
oscillations.
Significance
statement
Understanding
why
perceive
identical
differently
question
neuroscience.
This
provides
directly
influence
perception,
particularly
mental
state.
By
alongside
recordings,
modulating
can
alter
perceptual
outcomes.
highlight
state—such
levels—in
work
our
opens
avenues
for
developing
targeted
interventions
enhance
sensory
processing
cognitive
functions,
potentially
benefiting
individuals
with
or
attentional
disorders.
Frontiers in Psychology,
Journal Year:
2024,
Volume and Issue:
15
Published: Feb. 20, 2024
Schizophrenia
is
a
severe,
chronic
mental
disorder
that
profoundly
impacts
patients’
everyday
lives.
The
illness’s
core
features
include
positive
and
negative
symptoms
cognitive
impairments.
In
particular,
deficits
in
the
social
cognition
domain
showed
tighter
connection
to
functioning
than
other
symptoms.
Social
remediation
interventions
have
been
developed,
providing
heterogeneous
results
considering
possibility
of
generalizing
acquired
improvements
daily
activities.
this
pilot
randomized
controlled
trial,
we
investigated
feasibility
combining
fifteen
training
sessions
with
non-invasive
brain
stimulation
boost
effectiveness
two
interventions.
We
delivered
intermittent
theta
burst
(iTBS)
over
left
dorsolateral
prefrontal
cortex
(DLPFC).
Twenty-one
patients
were
into
four
groups,
varying
for
assigned
condition
(real
vs.
sham
iTBS)
type
intervention
(training
no
training).
Clinical
tests
administered
at
five
time
points,
i.e.,
before
after
treatment,
three
follow-ups
one,
three,
six
months
treatments’
end.
Preliminary
data
show
trend
improving
competence
managing
emotion
participants
performing
training.
Conversely,
differences
found
pre
post-treatment
scores
recognition,
theory
mind,
attribution
intentions
scores.
iTBS
did
not
induce
additional
effects
on
individuals’
performance.
methodological
approach’s
novelty
limitations
present
study
are
discussed.
Frontiers in Neurology,
Journal Year:
2023,
Volume and Issue:
14
Published: July 11, 2023
Stroke
is
a
central
nervous
system
disease
that
causes
structural
lesions
and
functional
impairments
of
the
brain,
resulting
in
varying
types,
degrees
dysfunction.
The
bimodal
balance-recovery
model
(interhemispheric
competition
vicariation
model)
has
been
proposed
as
mechanism
recovery
after
stroke.
We
analyzed
how
combinations
motor
observation
treatment
approaches,
transcranial
electrical
(TES)
or
magnetic
(TMS)
stimulation
peripheral
(PES)
(PMS)
techniques
can
be
taken
accessorial
physical
therapy
methods
on
symptom
reduction
stroke
patients.
suggest
top-down
bottom-up
combined
with
action
synergistically
might
develop
into
valuable
strategies
neurorehabilitation
explored
TES
TMS
intervention
over
contralesional
hemisphere
lesioned
PES
PMS
paretic
limbs
during
followed
by
execution
have
super-additive
effects
to
potentiate
effect
conventional
paradigm
could
an
innovative
adjunctive
approach
rehabilitation
treatment,
especially
for
those
patients
severe
deficits.
Brain Sciences,
Journal Year:
2023,
Volume and Issue:
13(4), P. 698 - 698
Published: April 21, 2023
Gambling
disorder
(GD)
is
a
behavioral
addiction
that
severely
impacts
individuals’
functioning,
leading
to
high
socioeconomic
costs.
Non-invasive
brain
stimulation
(NiBS)
has
received
attention
for
treating
psychiatric
and
neurological
conditions
in
recent
decades,
but
there
no
recommendation
its
use
GD.
Therefore,
this
study
aimed
systematically
review
analyze
the
available
literature
determine
effectiveness
of
NiBS
Following
PRISMA
guidelines,
we
screened
four
electronic
databases
up
July
2022
selected
relevant
English-written
original
articles.
We
included
ten
papers
systematic
seven
meta-analysis.
As
only
two
studies
employed
sham-controlled
design,
pre–post
standardized
mean
change
(SMCC)
was
computed
as
effect
size
real
stimulation.
The
results
showed
significant
reducing
craving
scores
(SMCC
=
−0.69;
95%
CI
[−1.2,
−0.2],
p
0.010).
Moreover,
considering
GD’s
frequent
comorbidity
with
mood
disorders,
ran
an
exploratory
analysis
effects
on
depressive
symptoms,
which
decreases
post-treatment
−0.71;
[−1.1,
−0.3],
<
0.001).
These
provide
initial
evidence
developing
feasible
therapy
GD
symptoms
further
comprehensive
research
needed
validate
these
findings.
limitations
are
critically
discussed.
Cureus,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 15, 2025
An
88-year-old
woman
presented
with
a
longstanding
history
of
dizziness,
tremors,
and
progressive
mental
physical
decline,
significantly
impairing
her
mobility
autonomy.
Recently
discharged
from
an
ICU,
the
patient
required
extensive
support
for
daily
activities.
Diagnostic
evaluations,
including
EEG
analysis,
revealed
irregular
frequency
peaks
altered
cortical
activity,
particularly
in
frontal
prefrontal
regions.
The
underwent
cycle
18
sessions
radio
electric
asymmetric
conveyer
(REAC)
Neuro
Psycho
Physical
Optimization
(NPPO)
gamma
brain
wave
optimization
(BWO-G),
neuromodulatory
treatment
aimed
at
restoring
neurophysiological
balance.
Post-treatment,
demonstrated
marked
clinical
improvements,
enhanced
gait
stability,
reduced
improved
cognitive
function.
Electroencephalography
(EEG)
standardized
low-resolution
electromagnetic
tomography
(sLORETA)
analysis
confirmed
these
showing
normalized
activity
patterns
Brodmann
areas
6,
24,
31,
4,
32.
This
case
highlights
potential
REAC
NPPO
BWO-G
addressing
chronic
neurological
dysfunction
improving
quality
life
elderly
patients.
Furthermore,
broader
applicability
this
suggests
benefits
managing
similar
conditions
aging
populations,
such
as
Parkinson's
disease,
age-related
post-stroke
rehabilitation,
where
bioelectrical
dysregulation
plays
central
role.
Psychiatry and Clinical Neurosciences,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 8, 2025
Borderline
personality
disorder
(BPD)
patients
show
negative
emotional
reactions
to
both
excluding
and
including
social
scenarios,
with
levels
normalizing
only
during
extreme
inclusion.
Prior
research
among
healthy
individuals
highlights
the
right
ventrolateral
prefrontal
cortex
(rVLPFC)
role
in
regulating
responses
exclusion,
since
transcranial
direct
current
stimulation
(tDCS)
of
rVLPFC
decreases
rejection-related
emotions
following
exclusion.
This
pilot
study
investigated
whether,
BPD
patients,
tDCS
over
reduces
not
after
exclusion
but
also
fair
Forty
randomly
received
either
real
or
sham
on
before
participating
Cyberball
paradigm,
which
involved
phases
inclusion,
over-inclusion.
Participants
self-reported
their
level
each
phase.
Transcranial
reduced
Specifically,
those
Real
group
exhibited
comparable
over-including
unlike
Sham
who
experienced
heightened
inclusion
compared
patients'
tendency
feel
rejected
fairly
scenarios.
These
findings
confirm
involvement
regulation
highlight
a
therapeutic
potential
for
moderating
BPD's
typical
supports
application
treatment,
providing
new
insights
into
neuromodulatory
interventions
that
can
aid
better
regulate
varying
Frontiers in Human Neuroscience,
Journal Year:
2025,
Volume and Issue:
19
Published: March 3, 2025
Introduction
Electrical
stimulation
(ES),
including
transcranial
electrical
(tES)
and
transcutaneous
vagus
nerve
(tVNS),
has
shown
potential
for
cognitive
enhancement
in
military
contexts.
Various
types
of
ES,
such
as
direct
current
(tDCS)
alternating
(tACS),
modulate
neuronal
membrane
potentials
cortical
excitability,
potentially
improving
functions
relevant
to
training
operations.
Methods
This
systematic
review
updates
previous
findings
by
examining
studies
published
between
2019
2024
that
investigated
effects
on
performance
personnel
tasks.
We
focused
whether
the
addressed
key
questions
about
generalizability
lab
tasks,
frequency
intensity
adverse
effects,
impact
repeated
ES
administration,
ethical
regulatory
considerations
its
use
vulnerable
populations.
Results
Eleven
met
inclusion
criteria;
most
demonstrated
overall
low
some
concerns,
however,
two
these
had
high
risk
bias.
While
tES
tVNS
showed
promise
enhancing
multitasking
visual
search
performance,
results
were
mixed,
with
no
reliable
vigilance
Discussion
The
reviewed
highlight
need
a
better
understanding
mechanisms,
optimal
parameters,
individual
differences
response
ES.
They
also
importance
conducting
high-powered
research
settings
evaluate
efficacy,
safety,
implications
Future
should
address
lab-based
real-world
monitor
explore
long-term
impacts
administration.
Furthermore,
are
crucial
responsible
application
contexts,
series
outstanding
is
posed
guide
continuing
this
domain.
Brain Sciences,
Journal Year:
2024,
Volume and Issue:
14(1), P. 105 - 105
Published: Jan. 22, 2024
Transcranial
direct
current
stimulation
(tDCS)
is
acknowledged
for
its
non-invasive
modulation
of
neuronal
activity
in
psychiatric
disorders.
However,
application
insomnia
research
yields
varied
outcomes
depending
on
different
tDCS
types
and
patient
conditions.
Our
primary
objective
to
elucidate
efficiency
uncover
the
underlying
mechanisms
treatment.
We
hypothesized
that
anodal
prefrontal
cortex
activates
glutamatergic
projections
from
infralimbic
(IL)
ventrolateral
preoptic
area
(VLPO)
promote
sleep.
After
administering
0.06
mA
electrical
currents
8
min,
our
results
indicate
significant
non-rapid
eye
movement
(NREM)
enhancement
naïve
mice
within
initial
3
h
post-stimulation,
persisting
up
16–24
h.
In
group,
enhanced
NREM
sleep
bout
numbers
during
acute
stress
response
improved
REM
duration
subsequent
insomnia.
Sleep
quality,
assessed
through
delta
powers,
remains
unaffected.
Interference
IL-VLPO
pathway,
utilizing
designer
receptors
exclusively
activated
by
drugs
(DREADDs)
with
cre-DIO
system,
partially
blocked
tDCS’s
improvement
stress-induced
This
study
elucidated
activation
pathway
mediates
effect
These
findings
support
understanding
effects
disturbances,
providing
valuable
insights
future
clinical
applications
therapy.
Brain Sciences,
Journal Year:
2024,
Volume and Issue:
14(7), P. 683 - 683
Published: July 8, 2024
Schizophrenia
is
a
chronic
psychiatric
disorder
severely
affecting
patients’
functioning
and
quality
of
life.
Unlike
positive
symptoms,
cognitive
impairment
negative
symptoms
cannot
be
treated
pharmacologically
represent
consistent
predictors
the
illness’s
prognosis.
Cognitive
remediation
(CR)
interventions
have
been
applied
to
target
these
symptoms.
Brain
stimulation
also
provides
promising
yet
preliminary
results
in
reducing
whereas
its
effect
on
remains
heterogeneous.
Here,
we
combined
intermittent
theta
burst
(iTBS)
with
CR
improve
schizophrenia
spectrum
patients.
One
hundred
eligible
patients
were
invited,
twenty-one
participated.
We
randomized
them
into
four
groups,
manipulating
condition
(real
vs.
sham)
(no
training
training).
delivered
fifteen
iTBS
sessions
over
left
dorsolateral
prefrontal
cortex
for
three
weeks,
followed
(or
not)
by
50
min
training.
Consensus-based
clinical
assessment
was
administered
at
baseline
after
treatment,
plus
follow-ups
occurring
one,
three,
six
months
intervention.
Mixed-model
analyses
run
symptom
scores.
The
findings
highlighted
marginal
modulation
improved
isolated
functions.
herein
discuss
limitations
strengths
methodological
approach.
Transcranial
direct
current
stimulation
(tDCS)
is
acknowledged
for
its
non-invasive
modulation
of
neuronal
activity
in
psychiatric
disorders.
However,
application
insomnia
research
yields
varied
outcomes
depending
on
different
tDCS
types
and
patient
conditions.
Our
primary
objective
to
elucidate
efficiency
uncover
the
underlying
mechanisms
treatment.
We
hypothesized
that
anodal
prefrontal
cortex
activates
glutaminergic
projections
from
infralimbic
(IL)
ventrolateral
preoptic
area
(VLPO)
promote
sleep.
After
administering
0.06
mA
electrical
currents
8
minutes,
our
results
indicate
significant
non-rapid
eye
movement
(NREM)
enhancement
naïve
mice
within
initial
3
hours
post-stimulation,
persisting
up
16-24
hours.
In
group,
enhanced
NREM
sleep
bout
numbers
during
acute
stress
response
improved
REM
duration
subsequent
insomnia.
Sleep
quality,
assessed
through
delta
powers,
remains
unaffected.
Interference
IL-VLPO
pathway,
utilizing
designer
receptors
exclusively
activated
by
drugs
(DREADDs)
with
cre-DIO
system,
partially
blocked
tDCS's
improvement
stress-induced
This
study
elucidated
activation
pathway
mediates
effect
These
findings
support
understanding
effects
disturbances,
providing
valuable
insights
future
clinical
applications
therapy.
medRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 13, 2024
ABSTRACT
Background
Substance
use
disorders
(SUDs)
and
Gambling
Disorder
(GD)
are
addictive
with
a
chronic
course.
Given
the
limited
efficacy
of
conventional
treatments,
there
is
increasing
interest
in
alternative
strategies
targeting
altered
neural
circuits
associated
disease.
In
this
context,
deep
Transcranial
Magnetic
Stimulation
(dTMS)
has
emerged
as
novel
neuromodulation
technique
capable
reaching
brain
regions.
However,
no
definite
recommendation
for
its
addiction
treatment
exists.
This
study
systematically
reviewed
quantitatively
analyzed
dTMS
effects
SUDs
GD
populations.
Methods
Following
PRISMA
guidelines,
we
screened
four
electronic
databases
up
to
February
2024
selected
relevant
English-written
original
research
articles.
17
papers
were
included
systematic
review.
As
only
minority
studies
employed
sham-controlled
design,
ran
meta-analysis
on
subset
12
studies,
computing
pre-post
real
stimulation
standardized
mean
change
(SMCC)
effect
size,
using
self-reported
craving
scores
dependent
variable.
Results
The
results
showed
significant
large
active
reducing
(SMCC
=
-
1.26,
95%
CI
[-1.67,
0.86],
p
<.001).
High
heterogeneity
at
both
quantitative
qualitative
levels
across
was
found,
focusing
different
types
one
gambling
behaviors.
Conclusions
provide
initial
evidence
feasibility
care.
further
comprehensive
needed
unveil
several
methodological
challenges.
limitations
available
literature
future
directions
critically
discussed.