NeuroImage,
Journal Year:
2021,
Volume and Issue:
238, P. 118204 - 118204
Published: June 1, 2021
Group-level
studies
do
not
capture
individual
differences
in
network
organization,
an
important
prerequisite
for
understanding
neural
substrates
shaping
behavior
and
developing
interventions
clinical
conditions.
Recent
have
employed
'fingerprinting'
analyses
on
functional
connectivity
to
identify
subjects'
idiosyncratic
features.
Here,
we
develop
a
complementary
approach
based
edge-centric
model
of
connectivity,
which
focuses
the
co-fluctuations
edges.
We
first
show
whole-brain
edge
(eFC)
be
robust
substrate
that
improves
identifiability
over
nodal
FC
(nFC)
across
different
datasets
parcellations.
Next,
characterize
at
spatial
scales,
from
single
nodes
level
systems
clusters
using
k-means
clustering.
Across
find
heteromodal
brain
regions
exhibit
consistently
greater
than
unimodal,
sensorimotor,
limbic
regions.
Lastly,
can
further
improved
by
reconstructing
eFC
specific
subsets
its
principal
components.
In
summary,
our
results
highlight
utility
capturing
meaningful
subject-specific
features
sets
stage
future
investigations
into
models.
Cerebral Cortex,
Journal Year:
2020,
Volume and Issue:
30(8), P. 4361 - 4380
Published: Jan. 22, 2020
Numerous
brain
imaging
studies
identified
a
domain-general
or
"multiple-demand"
(MD)
activation
pattern
accompanying
many
tasks
and
may
play
core
role
in
cognitive
control.
Though
this
finding
is
well
established,
the
limited
spatial
localization
provided
by
traditional
methods
precluded
consensus
regarding
precise
anatomy,
functional
differentiation,
connectivity
of
MD
system.
To
address
these
limitations,
we
used
data
from
449
subjects
Human
Connectome
Project,
with
cortex
each
individual
parcellated
using
neurobiologically
grounded
multimodal
MRI
features.
The
conjunction
three
contrasts
reveals
10
widely
distributed
parcels
per
hemisphere
that
are
most
strongly
activated
functionally
interconnected,
surrounded
penumbra
17
additional
areas.
Outside
cerebral
cortex,
prominent
caudate
cerebellum.
Comparison
canonical
resting-state
networks
shows
regions
concentrated
fronto-parietal
network
but
also
engaging
other
networks.
activations
show
modest
relative
task
preferences
strong
co-recruitment.
With
anatomical
organization,
mosaic
preferences,
interconnectivity,
suggest
positioned
to
integrate
assemble
diverse
components
operations.
Our
delineation
provides
basis
for
refined
analyses
their
functions.
NeuroImage,
Journal Year:
2019,
Volume and Issue:
206, P. 116290 - 116290
Published: Oct. 18, 2019
An
important
aspect
of
network-based
analysis
is
robust
node
definition.
This
issue
critical
for
functional
brain
network
analyses,
as
poor
choice
can
lead
to
spurious
findings
and
misleading
inferences
about
organization.
Two
sets
nodes
from
our
group
are
well
represented
in
the
literature:
(1)
264
volumetric
regions
interest
(ROIs)
reported
Power
et
al.,
2011,
(2)
333
cortical
surface
parcels
Gordon
2016.
However,
subcortical
cerebellar
structures
either
incompletely
captured
or
missing
these
ROI
sets.
Therefore,
properties
organization
involving
subcortex
cerebellum
may
be
underappreciated
thus
far.
Here,
we
apply
a
winner-take-all
partitioning
method
resting-state
fMRI
data
generate
novel
functionally-constrained
ROIs
thalamus,
basal
ganglia,
amygdala,
hippocampus,
cerebellum.
We
validate
three
datasets
using
several
criteria,
including
agreement
with
existing
literature
anatomical
atlases.
Further,
demonstrate
that
combining
established
recapitulates
extends
previously
described
new
set
made
publicly
available
general
use,
full
list
MNI
coordinates
labels.
Physiological Reviews,
Journal Year:
2020,
Volume and Issue:
100(3), P. 1181 - 1228
Published: Feb. 20, 2020
For
more
than
one
century,
brain
processing
was
mainly
thought
in
a
localizationist
framework,
which
given
function
underpinned
by
discrete,
isolated
cortical
area,
and
with
similar
cerebral
organization
across
individuals.
However,
advances
mapping
techniques
humans
have
provided
new
insights
into
the
organizational
principles
of
anatomo-functional
architecture.
Here,
we
review
recent
findings
gained
from
neuroimaging,
electrophysiological,
as
well
lesion
studies.
Based
on
these
data
connectome,
challenge
traditional,
outdated
view
propose
an
alternative
meta-networking
theory.
This
model
holds
that
complex
cognitions
behaviors
arise
spatiotemporal
integration
distributed
but
relatively
specialized
networks
underlying
conation
cognition
(e.g.,
language,
spatial
cognition).
Dynamic
interactions
between
such
circuits
result
perpetual
succession
equilibrium
states,
opening
door
to
considerable
interindividual
behavioral
variability
neuroplastic
phenomena.
Indeed,
underlies
uniquely
human
propensity
learn
abilities,
also
explains
how
postlesional
reshaping
can
lead
some
degrees
functional
compensation
brain-damaged
patients.
We
discuss
major
implications
this
approach
fundamental
neurosciences
for
clinical
developments,
especially
neurology,
psychiatry,
neurorehabilitation,
restorative
neurosurgery.
Proceedings of the National Academy of Sciences,
Journal Year:
2020,
Volume and Issue:
117(29), P. 17308 - 17319
Published: July 6, 2020
Significance
The
human
brain
is
organized
into
large
networks.
One
important
network
the
Default
network,
which
enables
cognitive
functions
such
as
social
thinking,
memory,
and
reward.
In
group-averaged
data,
this
emerges
a
unitary
whole,
despite
its
involvement
in
multiple
functions.
Here,
we
tested
whether
networks
found
individual
humans,
rather
than
group-average
networks,
contain
substructure.
individuals,
consistently
nine
subnetworks
within
network.
These
matched
activity
patterns
during
tasks.
Some
resembled
circuits
involved
specific
Others
linked
to
other
summary,
study
describes
set
of
humans.
PLoS Biology,
Journal Year:
2021,
Volume and Issue:
19(6), P. e3001275 - e3001275
Published: June 2, 2021
Episodic
memory
depends
on
interactions
between
the
hippocampus
and
interconnected
neocortical
regions.
Here,
using
data-driven
analyses
of
resting-state
functional
magnetic
resonance
imaging
(fMRI)
data,
we
identified
networks
that
interact
with
hippocampus-the
default
mode
network
(DMN)
a
"medial
temporal
network"
(MTN)
included
regions
in
medial
lobe
(MTL)
precuneus.
We
observed
MTN
plays
critical
role
connecting
visual
to
DMN
hippocampus.
The
could
be
further
divided
into
3
subnetworks:
"posterior
medial"
(PM)
subnetwork
comprised
posterior
cingulate
lateral
parietal
cortices;
an
"anterior
temporal"
(AT)
temporopolar
dorsomedial
prefrontal
cortex;
prefrontal"
(MP)
primarily
cortex
(mPFC).
These
vary
their
connectivity
(FC)
along
hippocampal
long
axis
represent
different
kinds
information
during
memory-guided
decision-making.
Finally,
Neurosynth
meta-analysis
fMRI
studies
suggests
new
hypotheses
regarding
functions
subnetworks,
providing
framework
guide
future
research
neural
architecture
episodic
memory.
Nature Neuroscience,
Journal Year:
2024,
Volume and Issue:
27(5), P. 1000 - 1013
Published: March 26, 2024
Abstract
Although
the
general
location
of
functional
neural
networks
is
similar
across
individuals,
there
vast
person-to-person
topographic
variability.
To
capture
this,
we
implemented
precision
brain
mapping
magnetic
resonance
imaging
methods
to
establish
an
open-source,
method-flexible
set
network
atlases—the
Masonic
Institute
for
Developing
Brain
(MIDB)
Precision
Atlas.
This
atlas
evolving
resource
comprising
53,273
individual-specific
maps,
from
more
than
9,900
ages
and
cohorts,
including
Adolescent
Cognitive
Development
study,
Developmental
Human
Connectome
Project
others.
We
also
generated
probabilistic
maps
multiple
integration
zones
(using
a
new
overlapping
technique,
Overlapping
MultiNetwork
Imaging).
Using
regions
high
invariance
improved
reproducibility
executive
function
statistical
in
brain-wide
associations
compared
group
average-based
parcellations.
Finally,
provide
potential
use
case
targeted
neuromodulation.
The
expandable
alternative
datasets
with
online
interface
encouraging
scientific
community
explore
contribute
understanding
human
precisely.