Imaging Neuroscience,
Journal Year:
2024,
Volume and Issue:
2, P. 1 - 22
Published: Jan. 1, 2024
Abstract
The
brain’s
biological
age
has
been
considered
as
a
promising
candidate
for
neurologically
significant
biomarker.
However,
recent
results
based
on
longitudinal
magnetic
resonance
imaging
(MRI)
data
have
raised
questions
its
interpretation.
A
central
question
is
whether
an
increased
of
the
brain
indicative
pathology
and
if
changes
in
correlate
with
diagnosed
(state
hypothesis).
Alternatively,
could
discrepancy
be
stable
characteristic
unique
to
each
individual
(trait
hypothesis)?
To
address
this
question,
we
present
comprehensive
study
aging
clinical
Electroencephalography
(EEG),
which
complementary
previous
MRI-based
investigations.
We
apply
state-of-the-art
temporal
convolutional
network
(TCN)
task
regression.
train
recordings
Temple
University
Hospital
EEG
Corpus
(TUEG)
explicitly
labeled
non-pathological
evaluate
subjects
well
pathological
recordings,
both
examinations
at
single
point
time
TUH
Abnormal
(TUAB)
repeated
over
time.
Therefore,
created
four
novel
subsets
TUEG
that
include
multiple
recordings:
(RNP):
all
non-pathological;
(RP):
pathological;
transition
non-patholoigical
(TNPP):
least
one
recording
followed
by
(TPNP):
similar
TNPP
but
opposing
(first
then
non-pathological).
show
our
TCN
reaches
performance
decoding
TUAB
mean
absolute
error
6.6
years
R2
score
0.73.
Our
extensive
analyses
demonstrate
model
underestimates
subjects,
latter
significantly
(-1
-5
years,
paired
t-test,
p
=
0.18
6.6e−3).
Furthermore,
there
exist
differences
average
gap
between
(RNP
vs.
RP)
(-4
-7.48
permutation
test,
1.63e−2
1e−5).
find
mixed
regarding
significance
classification
While
it
datasets
RNP
versus
RP
(61.12%
60.80%
BACC,
1.32e−3
1e−5),
not
TPNP
(44.74%
47.79%
0.086
0.483).
Additionally,
these
scores
are
clearly
inferior
ones
obtained
from
direct
86%
BACC
higher.
evidence
change
status
within
relates
(0.46
1.35
0.825
0.43;
Wilcoxon-Mann-Whitney
Brunner-Munzel
0.13).
findings,
thus,
support
trait
rather
than
state
hypothesis
estimates
derived
EEG.
In
summary,
findings
indicate
neural
underpinnings
likely
more
multifaceted
previously
thought,
taking
into
account
will
benefit
interpretation
empirically
observed
dynamics.
Frontiers in Aging Neuroscience,
Journal Year:
2022,
Volume and Issue:
14
Published: Dec. 6, 2022
Introduction
Brain
age
prediction
has
been
shown
to
be
clinically
relevant,
with
errors
in
its
associated
various
psychiatric
and
neurological
conditions.
While
the
from
structural
functional
magnetic
resonance
imaging
data
feasible
high
accuracy,
whether
same
results
can
achieved
electroencephalography
is
unclear.
Methods
The
current
study
aimed
create
a
new
deep
learning
solution
for
brain
using
raw
resting-state
scalp
EEG.
To
this
end,
we
utilized
TD-BRAIN
dataset,
including
1,274
subjects
(both
healthy
controls
individuals
disorders,
total
of
1,335
recording
sessions).
achieve
best
prediction,
used
augmentation
techniques
increase
diversity
training
set
developed
convolutional
neural
network
model.
Results
model’s
was
done
10-fold
cross-subject
cross-validation,
EEG
recordings
not
considered
test
In
training,
relative
rather
than
absolute
loss
function
led
better
mean
error
5.96
years
cross-validation.
We
found
that
performance
could
when
both
eyes-open
eyes-closed
states
are
simultaneously.
frontocentral
electrodes
played
most
important
role
prediction.
Discussion
architecture
method
proposed
networks
(DCNN)
improve
state-of-the-art
metrics
task
by
13%.
Given
might
potential
biomarker
numerous
diseases,
inexpensive
precise
EEG-based
estimation
will
demand
clinical
practice.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Jan. 27, 2023
Abstract
Background
Brain
age
prediction
algorithms
using
structural
magnetic
resonance
imaging
(MRI)
aim
to
assess
the
biological
of
human
brain.
The
difference
between
a
person’s
chronological
and
estimated
brain
is
thought
reflect
deviations
from
normal
aging
trajectory,
indicating
slower,
or
accelerated,
process.
Several
pre-trained
software
packages
for
predicting
are
publicly
available.
In
this
study,
we
perform
head-to-head
comparison
such
with
respect
1)
predictive
accuracy,
2)
test-retest
reliability,
3)
ability
track
progression
over
time.
Methods
We
evaluated
six
packages:
brainageR,
DeepBrainNet,
brainage,
ENIGMA,
pyment,
mccqrnn.
accuracy
reliability
were
assessed
on
MRI
data
372
healthy
people
aged
18.4
86.2
years
(mean
38.7
±
17.5
years).
Results
All
showed
significant
correlations
predicted
(r
=
0.66
0.97,
p
<
0.001),
pyment
displaying
strongest
correlation.
mean
absolute
error
was
3.56
(pyment)
9.54
(ENIGMA).
mccqrnn
superior
in
terms
(ICC
values
0.94
-
0.98),
as
well
longer
time
span.
Conclusion
Of
packages,
brainageR
consistently
highest
reliability.
Frontiers in Psychology,
Journal Year:
2023,
Volume and Issue:
14
Published: June 9, 2023
Brain
age
refers
to
predicted
by
brain
features.
has
previously
been
associated
with
various
health
and
disease
outcomes
suggested
as
a
potential
biomarker
of
general
health.
Few
previous
studies
have
systematically
assessed
variability
derived
from
single
multi-shell
diffusion
magnetic
resonance
imaging
data.
Here,
we
present
multivariate
models
approaches
how
they
relate
bio-psycho-social
variables
within
the
domains
sociodemographic,
cognitive,
life-satisfaction,
well
lifestyle
factors
in
midlife
old
(
Brain Informatics,
Journal Year:
2024,
Volume and Issue:
11(1)
Published: April 4, 2024
Abstract
Brain
age
algorithms
using
data
science
and
machine
learning
techniques
show
promise
as
biomarkers
for
neurodegenerative
disorders
aging.
However,
head
motion
during
MRI
scanning
may
compromise
image
quality
influence
brain
estimates.
We
examined
the
effects
of
on
predictions
in
adult
participants
with
low,
high,
no
scans
(
Original
N
=
148;
Analytic
138
).
Five
popular
were
tested:
brainageR,
DeepBrainNet,
XGBoost,
ENIGMA,
pyment.
Evaluation
metrics,
intraclass
correlations
(ICCs),
Bland–Altman
analyses
assessed
reliability
across
conditions.
Linear
mixed
models
quantified
effects.
Results
demonstrated
significantly
impacted
estimates
some
algorithms,
ICCs
dropping
low
0.609
errors
increasing
up
to
11.5
years
high
scans.
DeepBrainNet
pyment
showed
greatest
robustness
(ICCs
0.956–0.965).
XGBoost
brainageR
had
largest
(up
13.5
RMSE)
bias
motion.
Findings
indicate
artifacts
significant
ways.
Furthermore,
our
results
suggest
certain
like
be
preferable
deployment
populations
where
acquisition
is
likely.
Further
optimization
validation
critical
use
a
biomarker
relevant
clinical
outcomes.
Imaging Neuroscience,
Journal Year:
2024,
Volume and Issue:
2, P. 1 - 22
Published: Jan. 1, 2024
Abstract
The
brain’s
biological
age
has
been
considered
as
a
promising
candidate
for
neurologically
significant
biomarker.
However,
recent
results
based
on
longitudinal
magnetic
resonance
imaging
(MRI)
data
have
raised
questions
its
interpretation.
A
central
question
is
whether
an
increased
of
the
brain
indicative
pathology
and
if
changes
in
correlate
with
diagnosed
(state
hypothesis).
Alternatively,
could
discrepancy
be
stable
characteristic
unique
to
each
individual
(trait
hypothesis)?
To
address
this
question,
we
present
comprehensive
study
aging
clinical
Electroencephalography
(EEG),
which
complementary
previous
MRI-based
investigations.
We
apply
state-of-the-art
temporal
convolutional
network
(TCN)
task
regression.
train
recordings
Temple
University
Hospital
EEG
Corpus
(TUEG)
explicitly
labeled
non-pathological
evaluate
subjects
well
pathological
recordings,
both
examinations
at
single
point
time
TUH
Abnormal
(TUAB)
repeated
over
time.
Therefore,
created
four
novel
subsets
TUEG
that
include
multiple
recordings:
(RNP):
all
non-pathological;
(RP):
pathological;
transition
non-patholoigical
(TNPP):
least
one
recording
followed
by
(TPNP):
similar
TNPP
but
opposing
(first
then
non-pathological).
show
our
TCN
reaches
performance
decoding
TUAB
mean
absolute
error
6.6
years
R2
score
0.73.
Our
extensive
analyses
demonstrate
model
underestimates
subjects,
latter
significantly
(-1
-5
years,
paired
t-test,
p
=
0.18
6.6e−3).
Furthermore,
there
exist
differences
average
gap
between
(RNP
vs.
RP)
(-4
-7.48
permutation
test,
1.63e−2
1e−5).
find
mixed
regarding
significance
classification
While
it
datasets
RNP
versus
RP
(61.12%
60.80%
BACC,
1.32e−3
1e−5),
not
TPNP
(44.74%
47.79%
0.086
0.483).
Additionally,
these
scores
are
clearly
inferior
ones
obtained
from
direct
86%
BACC
higher.
evidence
change
status
within
relates
(0.46
1.35
0.825
0.43;
Wilcoxon-Mann-Whitney
Brunner-Munzel
0.13).
findings,
thus,
support
trait
rather
than
state
hypothesis
estimates
derived
EEG.
In
summary,
findings
indicate
neural
underpinnings
likely
more
multifaceted
previously
thought,
taking
into
account
will
benefit
interpretation
empirically
observed
dynamics.