Attention improvement to transcranial alternating current stimulation at gamma frequency over the right frontoparietal network: a preliminary report
Acta Neuropsychiatrica,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 5
Published: Oct. 2, 2024
Abstract
Applying
transcranial
alternating
current
stimulation
(tACS)
at
40
Hz
to
the
frontal
and
parietal
regions,
either
unilaterally
(left
or
right)
bilaterally,
can
improve
cognitive
dysfunctions.
This
study
aimed
explore
influence
of
tACS
gamma
frequency
over
right
fronto-parietal
(FP)
region
on
attention.
The
analysis
is
based
retrospective
data
from
a
clinical
intervention.
We
administered
test
variables
attention
(TOVA;
visual
mode)
44
participants
with
various
neuropsychiatric
diagnoses
before
after
12
sessions
treatment.
Alternating
currents
2.0
mA
were
delivered
electrode
positions
F4
P4,
following
10–20
EEG
convention,
for
20
mins
in
each
session.
observed
significant
improvement
across
3
indices
TOVA,
including
reduction
variability
reaction
time
(
p
=
0.0002),
increase
d-Prime
(separability
targets
non-targets;
0.0157),
decrease
commission
error
rate
0.0116).
mean
RT
omission
largely
remained
unchanged.
Artificial
injection
FP
network
may
function,
especially
domains
consistency
performance,
target/non-target
discrimination,
inhibitory
control.
Language: Английский
Effects of Transcranial Electrical Stimulation on Physiological Responses to Acute Stress: A Systematic Review
Hannah Hart-Pomerantz,
No information about this author
E. M. F. Roe,
No information about this author
Tad T. Brunyé
No information about this author
et al.
Journal of Cognitive Enhancement,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 9, 2024
Abstract
Physiological
responses
to
acute
stress
generally
proceed
through
two
phases:
first,
a
rapid
and
transient
sympathetic
parasympathetic
nervous
system
response,
second,
slow
relatively
sustained
hypothalamic-pituitary-adrenal
(HPA)
response.
These
are
associated
with
changes
in
heart
rate,
rate
variability,
electrodermal
responses,
blood
pressure,
salivary
biomarkers
such
as
alpha
amylase
cortisol.
Through
the
interactions
of
biochemical
distributed
brain
regions
including
amygdala,
hippocampus,
striatum,
prefrontal
cortex,
exposure
can
also
adversely
affect
cognitive
function.
Transcranial
electrical
stimulation
(tES),
transcranial
direct,
alternating,
random
noise
(tDCS,
tACS,
tRNS),
has
been
examined
for
its
potential
ability
modulate
physiological
buffer
negative
impacts
on
This
systematic
review
surveyed
research
examining
effects
tES
healthy
neurotypical
samples,
cardiorespiratory
(e.g.,
rate),
peripheral
electrodermal),
amylase,
cortisol)
outcomes.
Sixteen
reports
were
identified
inclusion.
The
articles
showed
low
high
risk
bias,
used
diverse
set
induction
techniques
methodologies,
wide
range
We
found
mixed
evidence
effectiveness
reducing
suggest
that
some
methodologies
may
be
more
promising
than
others.
Several
directions
continuing
proposed
help
elucidate
mechanisms
underlying
clarify
application
enhancement
domains.
Language: Английский
Connectivity changes following transcranial alternating current stimulation at 5-Hz: an EEG study
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 18, 2024
Abstract
Introduction
Transcranial
alternating
current
stimulation
(tACS)
at
5-Hz
to
the
right
hemisphere
can
alleviate
anxiety
symptoms.
This
study
aimed
explore
connectivity
changes
following
treatment.
Methods
We
collected
electroencephalography
(EEG)
data
from
24
participants
with
disorders
before
and
after
tACS
treatment
during
a
single
session.
Electric
was
applied
over
hemisphere,
1.0
mA
F4,
P4,
2.0
T8,
10–10
EEG
convention.
With
eLORETA,
scalp
signals
were
transformed
into
cortex’s
source
density.
assessed
theta
frequency
between
centers
of
Brodmann
area
(BA)
6/8
(frontal),
BA
39/40
(parietal),
21
(middle
temporal).
Functional
indicated
by
lagged
coherences
phase
synchronization.
Paired
t-tests
used
quantify
differences
statistically.
Results
observed
enhanced
synchronization
frontal
parietal
regions
(
P
=
0.002)
temporal
0.005),
Bonferroni
correction.
Conclusion
Applying
inter-regional
interaction,
which
spectrum-specific
mainly
mediated
phase,
rather
than
power,
synchrony.
The
potential
neural
mechanisms
are
discussed.
Language: Английский
Transcranial Alternating Current Stimulation: A Novel Neuromodulatory Treatment for Anxiety and Related Disorders
Yahui Chen,
No information about this author
Bicheng Gao,
No information about this author
Yuqi You
No information about this author
et al.
ACS Chemical Neuroscience,
Journal Year:
2024,
Volume and Issue:
15(21), P. 3794 - 3796
Published: Oct. 28, 2024
Given
the
high
prevalence
and
socioeconomic
burden
of
anxiety
disorders,
there
is
an
urgent
need
for
effective,
fast-acting,
cost-efficient
treatment
alternatives
to
traditional
psychotherapy.
Transcranial
alternating
current
stimulation
(tACS),
a
noninvasive
brain
technique
that
modulates
endogenous
oscillations
via
application
sinusoidal
currents
scalp,
emerges
as
promising
neuromodulatory
treatment.
We
reviewed
oscillatory
neuropsychopathology
in
anxiety,
examined
evidence
tACS
interventions
related
proposed
novel
simulation
targets
protocols.
emphasize
rigorously
designed
clinical
trials
systematically
investigate
neuropsychological
effects
different
protocols
on
diverse
populations
with
pathological
anxiety.
Language: Английский