Parietal alpha and theta power predict cognitive training gains in middle-aged adults
Frontiers in Aging Neuroscience,
Год журнала:
2025,
Номер
17
Опубликована: Март 13, 2025
Research
on
executive
functions
training
shows
inconsistent
outcomes,
with
factors
like
age,
baseline
cognitive
abilities,
and
personality
traits
implicated
as
predictive
of
gains,
while
limited
attention
has
been
given
to
neurophysiological
markers.
Theta
alpha
band
power
are
linked
performance,
suggesting
a
potential
area
for
further
study.
This
study
aimed
determine
whether
relative
theta
their
ratio
could
predict
gains
in
updating
inhibition
beyond
the
practice
effects
(the
order
session).
Forty
healthy
middle-aged
adults
(aged
49–65)
were
randomly
assigned
either
group
(
n
=
20),
or
communication
skills
(control)
20).
Both
groups
completed
self-administered
sessions
twice
week
10
weeks,
totaling
20
sessions.
Resting-state
EEG
data
recorded
before
first
session.
Mixed-effects
model
analyses
revealed
that
higher
parietal
positively
predicted
negatively
performance.
Additionally,
alpha/theta
was
associated
better
frontal
did
not
demonstrate
significant
value.
Other
measures
show
additional
what
accounted
by
session
effects.
The
findings
imply
individuals
specific
pattern
may
change
training,
making
resting-state
useful
tool
tailoring
interventions.
Язык: Английский
Transcranial alternating current stimulation for investigating complex oscillatory dynamics and interactions
Samira Barzegar,
Carolina F M Kakies,
Dorina Ciupercӑ
и другие.
International Journal of Psychophysiology,
Год журнала:
2025,
Номер
212, С. 112579 - 112579
Опубликована: Май 1, 2025
Neural
oscillations
play
a
fundamental
role
in
human
cognition
and
behavior.
While
electroencephalography
(EEG)
related
methods
provide
precise
temporal
recordings
of
these
oscillations,
they
are
limited
their
ability
to
generate
causal
conclusions.
Transcranial
alternating
current
stimulation
(tACS)
has
emerged
as
promising
non-invasive
neurostimulation
technique
modulate
neural
which
offers
insights
into
functional
relation
Originally,
tACS
is
applied
between
two
or
more
electrodes
at
given
frequency.
However,
recent
advances
have
aimed
apply
different
waveforms
target
specific
oscillatory
dynamics.
This
systematic
review
evaluates
the
efficacy
non-standard
applications
designed
investigate
patterns
beyond
simple
sinusoidal
stimulation.
We
categorized
approaches
three
key
domains:
(1)
phase
synchronization
techniques,
including
in-phase,
anti-phase,
traveling
wave
stimulation;
(2)
non-sinusoidal
tACS,
applies
alternative
such
composite,
broadband
triangular
oscillations;
(3)
amplitude-modulated
interference
stimulation,
allow
for
concurrent
EEG
deeper
cortical
targeting.
number
studies
evidence
added
value
procedures,
other
show
opposing
null
findings.
Crucially,
most
currently
low,
such,
goal
this
highlight
both
promise
limitations
providing
foundation
future
research
neurostimulation.
Язык: Английский