Journal of Neurophysiology,
Journal Year:
2024,
Volume and Issue:
132(5), P. 1577 - 1588
Published: Oct. 16, 2024
Aperiodic
and
periodic
components
were
separated
in
a
large
open-access
EEG
dataset
of
sleep
deprivation.
offsets
increase
after
deprivation,
particularly
the
occipital
region,
reflecting
decline
self-reported
vigilance.
Parameterized
alpha
bandwidth,
which
was
ignored
previous
studies,
is
found
to
be
relevant
Increase
bandwidth
focused
temporal
lobes.
Developmental Cognitive Neuroscience,
Journal Year:
2024,
Volume and Issue:
67, P. 101404 - 101404
Published: June 1, 2024
The
theta
band
is
one
of
the
most
prominent
frequency
bands
in
electroencephalography
(EEG)
power
spectrum
and
presents
an
interesting
paradox:
while
elevated
during
resting
state
linked
to
lower
cognitive
abilities
children
adolescents,
increased
tasks
associated
with
higher
performance.
Why
does
power,
measured
versus
tasks,
show
differential
correlations
functioning?
This
review
provides
integrated
account
functional
correlates
across
different
contexts.
We
first
present
evidence
that
correlated
executive
functioning,
attentional
abilities,
language
skills,
IQ.
Next,
we
research
showing
increases
memory,
attention,
control,
these
processes
better
Finally,
discuss
potential
explanations
for
between
resting/task-related
offer
suggestions
future
this
area.
Journal of Neuroscience,
Journal Year:
2024,
Volume and Issue:
44(13), P. e1332232024 - e1332232024
Published: Feb. 19, 2024
Measures
of
intrinsic
brain
function
at
rest
show
promise
as
predictors
cognitive
decline
in
humans,
including
EEG
metrics
such
individual
α
peak
frequency
(IAPF)
and
the
aperiodic
exponent,
reflecting
strongest
oscillations
relative
balance
excitatory/inhibitory
neural
activity,
respectively.
Both
IAPF
exponent
decrease
with
age
have
been
associated
worse
executive
working
memory.
However,
few
studies
jointly
examined
their
associations
function,
none
association
longitudinal
rather
than
cross-sectional
impairment.
In
a
preregistered
secondary
analysis
data
from
Midlife
United
States
(MIDUS)
study,
we
tested
whether
measured
predict
(
Psychophysiology,
Journal Year:
2022,
Volume and Issue:
59(11)
Published: June 25, 2022
Abstract
The
ratio
of
fronto‐central
theta
(4–7
Hz)
to
beta
oscillations
(13–30
Hz),
known
as
the
theta‐beta
ratio,
is
negatively
correlated
with
attentional
control,
reinforcement
learning,
executive
function,
and
age.
Although
ratios
have
been
found
decrease
age
in
adolescents
young
adults,
has
increase
older
adults.
Moreover,
age‐related
individual
alpha
peak
frequency
flattening
1/
f
aperiodic
component
may
artifactually
inflate
association
between
These
factors
lead
an
incomplete
understanding
how
varies
across
lifespan
extent
which
variation
due
a
conflation
periodic
activity.
We
conducted
partially
preregistered
analysis
examining
cross‐sectional
associations
resting
canonical
frequency,
(
n
=
268;
36–84,
M
55.8,
SD
11.0).
Age
was
associated
ratios,
frequencies,
exponent.
correlation
remained
after
controlling
for
but
nonsignificant
when
Aperiodic
exponent
fully
mediated
relationship
age,
although
significantly
theta,
alpha,
Results
replicate
previous
observations
show
decreases
are
not
frequencies
primarily
explained
by
npj Parkinson s Disease,
Journal Year:
2023,
Volume and Issue:
9(1)
Published: July 13, 2023
Parkinson's
disease
(PD)
is
a
progressive
and
debilitating
brain
disorder.
Besides
the
characteristic
movement-related
symptoms,
also
causes
decline
in
sensory
cognitive
processing.
The
extent
of
symptoms
brain-wide
projections
neuromodulators
such
as
dopamine
suggest
that
many
regions
are
simultaneously
affected
PD.
To
characterise
disease-related
changes
neuronal
function,
we
analysed
resting
state
magnetoencephalogram
(MEG)
from
two
groups:
PD
patients
healthy
controls.
standard
spectral
analysis,
quantified
aperiodic
components
(κ,
λ)
neural
activity
by
fitting
power
law
κ/f
Developmental Cognitive Neuroscience,
Journal Year:
2024,
Volume and Issue:
68, P. 101402 - 101402
Published: June 7, 2024
In
electroencephalographic
(EEG)
data,
power-frequency
slope
exponents
(1/f_β)
can
provide
non-invasive
markers
of
in
vivo
neural
activity
excitation-inhibition
(E:I)
balance.
E:I
balance
may
be
altered
neurodevelopmental
conditions;
hence,
understanding
how
1/f
β
evolves
across
infancy/childhood
has
implications
for
developing
early
assessments/interventions.
This
systematic
review
(PROSPERO-ID:
CRD42023363294)
explored
the
maturation
(0-26
yrs)
resting-state
EEG
measures
(aperiodic
[AE],
power
law
[PLE]
and
Hurst
[HE]
exponents),
including
studies
containing
≥1
≥10
typically
participants.
Five
databases
(including
Embase
Scopus)
were
searched
during
March
2023.
Forty-two
identified
(Nparticipants=3478).
Risk
bias
was
assessed
using
Quality
Assessment
with
Diverse
Studies
tool.
Narrative
synthesis
HE
data
suggests
non-stationary
occurs
throughout
development.
Age-related
trends
complex,
rapid
decreases
AEs
infancy
heterogenous
changes
thereafter.
Regionally,
AE
maxima
shifted
developmentally,
potentially
reflecting
spatial
maturing
brain
connectivity.
work
highlights
importance
further
characterising
development
to
better
understand
shapes
cognitive
Psychophysiology,
Journal Year:
2025,
Volume and Issue:
62(3)
Published: March 1, 2025
ABSTRACT
With
an
aging
global
population,
the
number
of
older
adults
with
age‐related
changes
in
brain,
including
dementia,
will
continue
to
increase
unless
we
can
make
progress
early
detection
and
treatment
such
conditions.
There
is
extensive
literature
on
effects
EEG,
particularly
a
decline
Peak
Alpha
Frequency
(PAF),
but
here,
reversal
convention,
used
EEG
power‐frequency
spectrum
estimate
chronological
age.
The
motivation
for
this
approach
was
that
individual's
brain
age
might
act
as
proxy
their
general
functioning,
whereby
discrepancy
between
could
prove
clinically
informative
by
implicating
deleterious
sample
sixty
healthy
adults,
whose
ages
ranged
from
20
78
years,
using
multivariate
methods
analyze
broad
(0.1–45
Hz),
strong
positive
correlations
emerged.
Furthermore,
more
accurate
accounted
variance
than
well‐established
PAF‐based
estimates
age,
indicating
be
comprehensive
measure
functioning.
We
conclude
become
biomarker
neural
cognitive
integrity.
Neurobiology of Aging,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 1, 2025
Age-related
cognitive
decline
associations
with
human
electroencephalography
(EEG)
have
previously
focused
on
periodic
activity.
However,
EEG
primarily
consists
of
non-oscillatory
aperiodic
activity,
characterised
an
exponent
and
offset
value.
In
a
secondary
analysis
cohort
111
healthy
participants
aged
17
-
71
years,
we
examined
the
in
resting
battery
tests
consisting
Colour-Word
Interference
Test,
Wechsler
Adult
Intelligence
Scale
IV
Digit
Span
Rey
Auditory
Learning
Delis-Kaplan
Executive
Function
System
Trail
Making
Verbal
Fluency
Test.
Using
Principal
Component
Analysis
K-Means
Clustering,
identified
clusters
electrodes
that
exhibited
similar
activity
during
resting-state
eyes-closed
EEG.
Robust
linear
models
were
then
used
to
model
how
interacted
age
their
performance
each
test.
Offset
by
interactions
for
where
smaller
offsets
associated
poorer
adults
as
early
33
years
age.
Greater
is
increasingly
related
better
verbal
fluency
adulthood.