Various
theories
have
attempted
to
explain
the
association
between
perception
of
musical
rhythm
and
reading
skills,
one
οf
them
being
Temporal
Sampling
Framework
(TSF).
According
TSF,
neural
entrainment
auditory
input
facilitates
both
speech
perception,
in
latter
case
by
enhancing
acquisition
units
(ordinal
encoding)
at
different
frequencies.
In
line
with
this,
we
found
a
correlation
beat
ordinal
encoding
meaningless
sequences
previous
study,
but
evidence
that
underpins
this
is
still
lacking.
current
investigation,
participants
engaged
task
alongside
visual
tasks
during
which
their
EEG
was
recorded
later
analyzed
for
strength
entrainment.
We
replicated
positive
encoding,
frequency
(around
2.5
Hz).
However,
no
direct
pointed
as
common
mechanism.
Our
findings
suggest
either
operates
differently
than
TSF
predicted
or
not
sole
determinant
encoding.
Brain and Language,
Год журнала:
2023,
Номер
243, С. 105301 - 105301
Опубликована: Июль 1, 2023
Atypical
phase
alignment
of
low-frequency
neural
oscillations
to
speech
rhythm
has
been
implicated
in
phonological
deficits
developmental
dyslexia.
could
thus
also
characterize
infants
at
risk
for
later
language
difficulties.
Here,
we
investigate
phase-language
mechanisms
a
neurotypical
infant
sample.
122
two-,
six-
and
nine-month-old
were
played
non-speech
rhythms
while
EEG
was
recorded
longitudinal
design.
The
infants'
aligned
consistently
the
stimuli,
with
group-level
convergence
towards
common
phase.
Individual
related
subsequent
measures
acquisition
up
24
months
age.
Accordingly,
individual
differences
are
cortical
tracking
auditory
audiovisual
infancy,
an
automatic
mechanism.
Automatic
rhythmic
eventually
serve
as
biomarkers,
identifying
at-risk
enabling
intervention
earliest
stages
development.
Frontiers in Human Neuroscience,
Год журнала:
2024,
Номер
18
Опубликована: Июнь 7, 2024
Slow
cortical
oscillations
play
a
crucial
role
in
processing
the
speech
amplitude
envelope,
which
is
perceived
atypically
by
children
with
developmental
dyslexia.
Here
we
use
electroencephalography
(EEG)
recorded
during
natural
listening
to
identify
neural
patterns
involving
slow
that
may
characterize
In
story
paradigm,
find
atypical
power
dynamics
and
phase-amplitude
coupling
between
delta
theta
dyslexic
versus
other
child
control
groups
(typically-developing
controls,
language
disorder
controls).
We
further
isolate
EEG
common
spatial
(CSP)
across
children.
A
linear
classifier
using
four
delta-band
CSP
variables
predicted
dyslexia
status
(0.77
AUC).
Crucially,
these
also
identified
when
applied
measured
rhythmic
syllable
task.
This
transfer
effect
(i.e.,
ability
features
derived
from
task
as
input
based
on
task)
consistent
core
deficit
of
rhythm.
The
findings
are
suggestive
distinct
neurocognitive
encoding
mechanisms
underlying
dyslexia,
could
be
targeted
novel
interventions.
medRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Март 17, 2023
Abstract
After
a
stroke,
approximately
one-third
of
patients
suffer
from
aphasia,
language
disorder
that
impairs
communication
ability.
The
standard
behavioral
tests
used
to
diagnose
aphasia
are
time-consuming,
require
subjective
interpretation,
and
have
low
ecological
validity.
As
consequence,
comorbid
cognitive
problems
present
in
individuals
with
(IWA)
can
bias
test
results,
generating
discrepancy
between
outcomes
everyday-life
abilities.
Neural
tracking
the
speech
envelope
is
promising
tool
for
investigating
brain
responses
natural
speech.
crucial
understanding,
encompassing
cues
detecting
segmenting
linguistic
units,
e.g.,
phrases,
words
phonemes.
In
this
study,
we
aimed
potential
neural
technique
impairments
IWA.
We
recorded
EEG
27
IWA
chronic
phase
after
stroke
22
healthy
controls
while
they
listened
25-minute
story.
quantified
broadband
frequency
range
as
well
delta,
theta,
alpha,
beta,
gamma
bands
using
mutual
information
analysis.
Besides
group
differences
measures,
also
tested
its
suitability
at
individual
level
Support
Vector
Machine
(SVM)
classifier.
further
investigated
required
recording
length
SVM
detect
obtain
reliable
outcomes.
displayed
decreased
compared
broad,
band,
which
line
assumed
role
these
auditory
pro-cessing
effectively
captured
level,
an
accuracy
84%
area
under
curve
88%.
Moreover,
demonstrated
high-accuracy
detection
be
achieved
time-efficient
(5
minutes)
highly
manner
(split-half
reliability
correlations
R=0.62
R=0.96
across
bands).
Our
study
shows
effective
biomarker
post-stroke
aphasia.
diagnostic
high
reliability,
individual-level
assessment.
This
work
represents
significant
step
towards
more
automatic,
objective,
ecologically
valid
assessments
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2022,
Номер
unknown
Опубликована: Ноя. 3, 2022
Cortical
signals
have
been
shown
to
track
acoustic
and
linguistic
properties
of
continuous
speech.
This
phenomenon
has
measured
in
both
children
adults,
reflecting
speech
understanding
by
adults
as
well
cognitive
functions
such
attention
prediction.
Furthermore,
atypical
low-frequency
cortical
tracking
is
found
with
phonological
difficulties
(developmental
dyslexia).
Accordingly,
may
play
a
critical
role
language
acquisition.
A
recent
investigation
infants
Attaheri
et
al.,
2022
(1)
probed
mechanisms
at
the
ages
4,
7
11
months
participants
listened
sung
Results
from
temporal
response
function
(TRF),
phase-amplitude
coupling
(PAC)
dynamic
theta-delta
power
(PSD)
analyses
indicated
envelope
stimulus-related
for
delta
theta
neural
signals.
delta-
theta-driven
PAC
was
all
ages,
phases
displaying
stronger
high-frequency
amplitudes
than
delta.
The
present
study
tests
whether
these
previous
findings
replicate
second
half
full
cohort
(N
=
122)
who
were
participating
this
longitudinal
(first
half:
N=61,
(1);
N=61).
In
addition
demonstrating
good
replication,
we
investigate
first
year
life
predicts
later
acquisition
(122
recruited,
113
retained)
using
infant-led
parent-estimated
measures
multivariate
univariate
analyses.
Increased
analyses,
increased
~2Hz
PSD
theta-gamma
related
better
outcomes
measures.
By
contrast,
~4Hz
multi-variate
delta-beta
higher
theta/delta
ratio
worse
outcomes.
data
are
interpreted
within
"Temporal
Sampling"
framework
developmental
trajectories.
Clinical Neurophysiology,
Год журнала:
2024,
Номер
160, С. 47 - 55
Опубликована: Фев. 9, 2024
Previous
studies
have
reported
atypical
delta
phase
in
children
with
dyslexia,
and
that
modulates
the
amplitude
of
beta-band
response
via
delta-beta
phase-amplitude
coupling
(PAC).
Accordingly,
delta-band
effects
dyslexia
may
imply
related
effects,
particularly
regarding
PAC.
Our
primary
objective
was
to
explore
oscillations
without
potentially
beta
band
dyslexic
children.
We
collected
EEG
data
during
a
rhythmic
speech
paradigm
from
51
(21
control;
30
dyslexia).
then
assessed
entrainment,
angular
velocity,
power
responses
found
significant
entrainment
for
control
but
not
Furthermore,
exhibited
significantly
faster
velocity
greater
power.
Delta-beta
PAC
comparable
both
groups.
Atypical
were
observed
dyslexia.
However,
These
findings
offer
further
insights
into
neurophysiological
basis
processing
by
suggesting
involvement
wide
range
frequency
bands.
Brain Communications,
Год журнала:
2025,
Номер
7(2)
Опубликована: Янв. 1, 2025
Abstract
After
a
stroke,
approximately
one-third
of
patients
suffer
from
aphasia,
language
disorder
that
impairs
communication
ability.
Behavioural
tests
are
the
current
standard
to
detect
but
they
time-consuming,
have
limited
ecological
validity
and
require
active
patient
cooperation.
To
address
these
limitations,
we
tested
potential
EEG-based
neural
envelope
tracking
natural
speech.
The
technique
investigates
response
temporal
speech,
which
is
critical
for
speech
understanding
by
encompassing
cues
detecting
segmenting
linguistic
units
(e.g.
phrases,
words
phonemes).
We
recorded
EEG
26
individuals
with
aphasia
in
chronic
phase
after
stroke
(>6
months
post-stroke)
22
healthy
controls
while
listened
25-min
story.
quantified
broadband
frequency
range
as
well
delta,
theta,
alpha,
beta
gamma
bands
using
mutual
information
analyses.
Besides
group
differences
measures,
also
its
suitability
at
individual
level
support
vector
machine
classifier.
further
investigated
reliability
required
recording
length
accurate
detection.
Our
results
showed
had
decreased
encoding
compared
broad,
theta
bands,
aligns
assumed
role
auditory
processing
Neural
effectively
captured
level,
classification
accuracy
83.33%
an
area
under
curve
89.16%.
Moreover,
demonstrated
high-accuracy
detection
can
be
achieved
time-efficient
(5–7
min)
highly
reliable
manner
(split-half
correlations
between
R
=
0.61
0.96
across
bands).
In
this
study,
identified
specific
characteristics
impaired
holding
promise
biomarker
condition.
Furthermore,
demonstrate
discriminate
high
accuracy,
manner.
findings
represent
significant
advance
towards
more
automated,
objective
ecologically
valid
assessments
impairments
aphasia.
Frontiers in Developmental Psychology,
Год журнала:
2025,
Номер
3
Опубликована: Март 19, 2025
In
this
article,
we
report
a
longitudinal
study
of
the
relationship
between
tapping
consistency,
phonological
awareness,
and
literacy
development
in
sample
children
initially
aged
approximately
8
years
who
were
followed
for
6
years.
The
comprised
121
participants,
some
whom
diagnosed
with
developmental
dyslexia
(DYS,
N
=
58).
other
typically
developing
either
chronological-age-matched
controls
(CA,
30)
DYS,
or
reading-age-matched
(RA,
33).
task
was
to
2-Hz
beat,
data
analyzed
using
circular
statistics.
This
resulted
vector
each
child
two
dependent
variables,
magnitude
(length,
0
1,
often
termed
synchronization
consistency)
phase
(+/–
π
radians).
number
able
synchronize
(“synchronizers”)
increased
age,
so
did
consistency.
“non-synchronizers”,
at
random,
declined
as
progressed.
Time-lagged
relations
consistency
composite
measures
awareness
significant
during
first
3
study.
They
remained
got
older.
All
groups
CA,
RA)
established
preferred
phase;
however,
time-lagged
behavioral
composites
not
any
time
point.
Mediation
analysis
multiple
regression
analyses
showed
that
significantly
predicted
later
cross-sectional
rhythmic
mediated
by
phonology.
are
discussed
terms
temporal
sampling
theory.
Abstract
Developmental
dyslexia
is
a
neurodevelopmental
disorder
characterized
by
significant
difficulties
in
reading
and
spelling.
Despite
lacking
routine
neuroimaging
markers
for
dyslexia,
recent
resting-state
electroencephalography
(EEG)
studies
have
detected
atypical
functional
connectivity
(FC)
at
the
sensor-level
children
with
compared
to
controls.
It
remains
unclear
if
clinical
EEG
can
be
used
detect
source-level
differences
between
Using
retrospective
data,
we
investigated
70
50
typically
developing
We
analyzed
seconds
of
awake
EEG,
calculating
power
two
FC
metrics
after
source-reconstruction.
Additionally,
correlations
or
IQ,
reading,
spelling
performance
were
analyzed.
Children
had
decrease
theta
left
temporo-parieto-occipital
regions
an
increase
alpha
fronto-temporo-parietal
regions.
Decreased
was
observed
right
parieto-occipital
inferior
fronto-temporal
Furthermore,
demonstrated
lower
delta
within
A
sub-analysis
indicated
that
5th-8th
school
grades
exhibit
greater
Lower
scores
showed
positive
association
dyslexia.
Significant
group
theta-alpha
range
suggest
abnormal
oscillations
as
pathophysiological
signs
orthographic,
visual
attention,
deficits.
Our
findings
indicate
potential
source-reconstructed
data
inform
clinicians
about
oscillatory
alterations
International Journal of Neural Systems,
Год журнала:
2023,
Номер
33(04)
Опубликована: Янв. 12, 2023
Developmental
dyslexia
is
characterized
by
a
deficit
of
phonological
awareness
whose
origin
related
to
atypical
neural
processing
speech
streams.
This
can
lead
differences
in
the
networks
that
encode
audio
information
for
dyslexics.
In
this
work,
we
investigate
whether
such
exist
using
functional
near-infrared
spectroscopy
(fNIRS)
and
complex
network
analysis.
We
have
explored
brain
derived
from
low-level
auditory
nonspeech
stimuli
units
as
stress,
syllables
or
phonemes
skilled
dyslexic
seven-year-old
readers.
A
analysis
was
performed
examine
properties
their
temporal
evolution.
aspects
connectivity
segregation,
integration
small-worldness.
These
are
used
features
extract
differential
patterns
controls
subjects.
The
results
corroborate
presence
discrepancies
topological
organizations
dynamics
differentiate
between
control
subjects,
reaching
an
Area
Under
ROC
Curve
(AUC)
up
0.89
classification
experiments.