Frontiers in Behavioral Neuroscience,
Journal Year:
2023,
Volume and Issue:
17
Published: May 24, 2023
Recent
studies
suggest
that
attention
is
rhythmic.
Whether
rhythmicity
can
be
explained
by
the
phase
of
ongoing
neural
oscillations,
however,
still
debated.
We
contemplate
a
step
toward
untangling
relationship
between
and
stems
from
employing
simple
behavioral
tasks
isolate
other
cognitive
functions
(perception/decision-making)
localized
monitoring
activity
with
high
spatiotemporal
resolution
over
brain
regions
associated
attentional
network.
In
this
study,
we
investigated
whether
electroencephalography
(EEG)
oscillations
predicts
alerting
attention.
isolated
mechanism
using
Psychomotor
Vigilance
Task,
which
does
not
involve
perceptual
component,
collected
EEG
novel
high-density
dry
arrays
at
frontal
region
scalp.
identified
alone
sufficient
to
induce
phase-dependent
modulation
behavior
frequencies
3,
6,
8
Hz
throughout
region,
quantified
low
states
in
our
cohort.
Our
findings
disambiguate
Neurobiology of Disease,
Journal Year:
2023,
Volume and Issue:
190, P. 106380 - 106380
Published: Dec. 17, 2023
Electroencephalography
(EEG)
has
shown
potential
for
identifying
early-stage
biomarkers
of
neurocognitive
dysfunction
associated
with
dementia
due
to
Alzheimer's
disease
(AD).
A
large
body
evidence
shows
that,
compared
healthy
controls
(HC),
AD
is
power
increases
in
lower
EEG
frequencies
(delta
and
theta)
decreases
higher
(alpha
beta),
together
slowing
the
peak
alpha
frequency.
However,
pathophysiological
processes
underlying
these
changes
remain
unclear.
For
instance,
recent
studies
have
that
apparent
shifts
from
high
low
can
be
driven
either
by
frequency
specific
periodic
or
rather
non-oscillatory
(aperiodic)
1/f
slope
spectrum.
Hence,
clarify
mechanism(s)
alterations
AD,
it
necessary
account
both
aperiodic
characteristics
signal.
Across
two
independent
datasets,
we
examined
whether
resting-state
linked
reflect
true
oscillatory
(periodic)
changes,
(non-oscillatory)
signal,
a
combination
both.
We
found
strong
are
purely
nature,
at
beta
(AD
<
HC)
leading
+
beta)
/
ratios
AD.
Aperiodic
features
did
not
differ
between
HC.
By
replicating
findings
cohorts,
provide
robust
pathophysiology
against
changes.
therefore
neural
dynamics
emphasize
robustness
signatures,
which
may
further
used
as
prognostic
interventional
targets
future
clinical
investigations.
Journal of Cognitive Neuroscience,
Journal Year:
2023,
Volume and Issue:
36(4), P. 590 - 601
Published: April 12, 2023
Abstract
The
brain
organizes
the
continuous
flow
of
sensory
input
by
parsing
it
into
discrete
events.
In
case
two
flashes
separated
a
brief
ISI,
for
example,
perception
may
be
single
flash
or
distinct
flashes,
depending
on
ISI
but
also
speed
processing.
A
number
studies
have
reported
evidence
that
participants
with
higher
EEG
peak
alpha
frequency
are
able
to
detect
presence
short
intervals,
whereas
those
slower
report
only
one
flash.
Other
not
found
this
correlation.
We
investigated
potential
factors
might
mask
relationship
between
individual
and
visual
perception.
recorded
resting-state
from
large
sample
(n
=
50)
measured
temporal
resolution
two-flash
fusion
task.
over
posterior
channels
predicted
threshold,
in
line
previous
studies,
correlation
was
significant
when
taking
account
steepness
psychophysical
curve
Participants
relatively
shallow
curve,
likely
reflecting
high
and/or
decision
noise,
failed
show
relationship.
These
findings
replicate
reports
resolution,
while
suggesting
an
explanation
performance
neglects
role
internal
noise
insufficient
all
differences.
Journal of Neuroscience,
Journal Year:
2024,
Volume and Issue:
44(40), P. e1234242024 - e1234242024
Published: Oct. 2, 2024
When
exposed
to
rhythmic
stimulation,
the
human
brain
displays
activity
across
sensory
modalities
and
regions.
Given
ubiquity
of
this
phenomenon,
how
rhythms
are
transformed
into
neural
remains
surprisingly
inconclusive.
An
influential
model
posits
that
endogenous
oscillations
entrain
external
rhythms,
thereby
encoding
environmental
dynamics
shaping
perception.
However,
research
on
entrainment
faces
multiple
challenges,
from
ambiguous
definitions
methodological
difficulties
when
need
be
identified
disentangled
other
stimulus-related
mechanisms
can
lead
similar
phase-locked
responses.
Yet,
recent
years
have
seen
novel
approaches
overcome
these
including
computational
modeling,
insights
dynamical
systems
theory,
sophisticated
stimulus
designs,
study
neuropsychological
impairments.
This
review
outlines
key
challenges
in
research,
delineates
state-of-the-art
approaches,
integrates
findings
animal
neurophysiology
provide
a
broad
perspective
usefulness,
validity,
constraints
oscillatory
models
brain-environment
interaction.
Frontiers in Psychology,
Journal Year:
2023,
Volume and Issue:
14
Published: Dec. 13, 2023
Neural
oscillations
in
alpha
(8–12
Hz)
and
beta
(13–30
frequency
bands
are
thought
to
reflect
feedback/reentrant
loops
large-scale
cortical
interactions.
In
the
last
decades
a
main
effort
has
been
made
linking
perception
with
alpha-band
oscillations,
converging
evidence
showing
that
have
key
role
temporal
featural
binding
of
visual
input,
configuring
rhythm
determinant
conscious
experience.
Less
attention
historically
dedicated
link
processing.
Nonetheless,
increasing
studies
report
task
conditions
require
segregate/integrate
stimuli
space,
disentangle
local/global
shapes,
spatially
reorganize
inputs,
achieve
motion
or
form-motion
integration,
rely
on
activity
hub
parietal
areas.
present
review,
we
summarize
within
band
perception.
We
propose
represent
neural
code
supports
functionality
magnocellular-dorsal
(M-D)
pathway,
serving
as
fast
primary
exert
top-down
influences
slower
parvocellular-ventral
pathway
activity.
Such
M-D-related
is
proposed
act
mainly
pre-consciously,
providing
spatial
coordinates
vision
guiding
extraction
objects
identity
achieved
rhythms
ventral
Finally,
this
new
theoretical
framework,
discuss
potential
visuo-spatial
attention,
oculo-motor
behavior
reading
(dis)abilities.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 20, 2025
Abstract
We
perceive
our
surrounding
as
a
continuous
stream
of
information.
Yet,
it
is
under
debate,
whether
brain
processes
the
incoming
information
continuously
or
rather
in
discontinuous
way.
In
recent
years,
idea
rhythmic
perception
has
regained
popularity,
assuming
that
parieto-occipital
alpha
oscillations
are
neural
mechanism
defining
rhythmicity
visual
perception.
Consequently,
behavioural
response
should
also
fluctuate
rhythm
(i.e.,
at
~
10
Hz).
To
test
this
hypothesis,
we
employed
integration
task.
Crucially
investigated
if
subliminal
stimulus
preceding
target
modulates
behaviour.
Our
results
show
behaviour
fluctuates
function
delay
between
and
stimuli.
These
fluctuations
were
found
range
theta,
beta
oscillations.
further
support
idea,
functional
for
perception,
leading
to
addition,
other
frequencies
seem
play
role
temporal