Aperiodic and oscillatory systems underpinning human domain-general cognition
Communications Biology,
Journal Year:
2024,
Volume and Issue:
7(1)
Published: Dec. 18, 2024
Abstract
Domain-general
cognitive
systems
are
essential
for
adaptive
human
behaviour,
supporting
various
tasks
through
flexible
neural
mechanisms.
While
fMRI
studies
link
frontoparietal
network
activation
to
increasing
demands
across
tasks,
the
electrophysiological
mechanisms
underlying
this
domain-general
response
demand
remain
unclear.
Here,
we
used
MEG/EEG,
and
separated
aperiodic
oscillatory
components
of
signals
examine
their
roles
in
cognition
three
using
multivariate
analysis.
We
found
that
both
(broadband
power,
slope,
intercept)
(theta,
alpha,
beta
power)
coded
task
content
all
subtasks.
Aperiodic
broadband
power
particular
strongly
demand,
a
manner
generalised
Source
estimation
suggested
decreased
brain,
with
strongest
modulations
overlapping
network.
In
contrast,
activity
showed
more
localised
patterns
modulation,
primarily
frontal
or
occipital
regions.
These
results
provide
insights
into
underpinnings
cognition,
highlighting
critical
role
power.
Language: Английский
Editorial overview: Cognitive flexibility
Current Opinion in Behavioral Sciences,
Journal Year:
2025,
Volume and Issue:
64, P. 101534 - 101534
Published: May 12, 2025
Language: Английский
Spatial and feature-selective attention interact to drive selective coding in frontoparietal cortex
Neuropsychologia,
Journal Year:
2025,
Volume and Issue:
unknown, P. 109172 - 109172
Published: May 1, 2025
Attention
enables
the
selective
processing
of
relevant
information.
Two
types
attention,
spatial
and
feature-selective
have
separable
neural
effects
but
in
real
life
are
often
used
together.
Here,
we
asked
how
these
attention
interact
to
affect
information
coding
a
frontoparietal
'multiple-demand'
(MD)
network,
essential
for
attentional
control.
Using
functional
magnetic
resonance
imaging
(fMRI)
with
multivariate
pattern
analysis,
examined
covert
object
features
(colour
or
shape)
locations
(left
right)
influences
task-related
stimulus
We
found
that
interacted
multiplicatively
on
MD
visual
regions,
such
there
was
above-chance
decoding
attended
feature
no
detectable
visually
equivalent
behaviourally
irrelevant
aspects
display.
The
had
multidimensional
representation,
(e.g.,
colour)
discrimination
difficulty
(distance
from
categorical
decision
boundary)
reflected
separate
dimensions.
Rather
than
boosting
whole
objects
across
space,
our
results
suggest
activity
reflects
precise
tuning
information,
indicating
highly
control
process
codes
multiple
Language: Английский
Top-Down Biasing of Visual Cortical Activity Encodes Attended Information and Facilitates Behavioral Performance in Visual Spatial Attention
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Aug. 7, 2023
Top-down
attention
plays
a
vital
role
in
selecting
relevant
stimuli
and
suppressing
distracting
information.
During
top-down
visual-spatial
attention,
control
signals
from
the
dorsal
network
modulate
baseline
neuronal
activity
visual
cortex
favor
of
task-relevant
stimuli.
While
several
studies
have
demonstrated
that
shift
during
anticipatory
occurs
multiple
areas,
such
effects
not
been
systematically
investigated
across
hierarchy,
especially
when
different
conditions
are
matched
for
stimulus
task
factors.
In
this
fMRI
study,
we
using
univariate
multivariate
(MVPA)
analysis
cortical
areas.
First,
yielded
significant
activation
differences
higher-order
with
effect
weaker
early
Second,
however,
contrast,
MVPA
decoding
was
predicting
all
areas
IPS,
lower-order
(e.g.,
V1)
having
greater
accuracy
than
LO1).
Third,
strength
predicted
behavioral
performance
discrimination
task.
All
results
were
highly
replicable
consistent
two
datasets
same
experimental
paradigms
but
recorded
at
research
sites,
where
direction
spatial
driven
either
by
external
instructions
(cue-instructed
attention)
or
internal
decisions
(free-choice
attention).
Our
provide
clear
evidence,
available
past
investigations,
attentional
selectively
bias
processing
throughout
biasing
is
correlated
performance.
Language: Английский
Aperiodic and oscillatory systems underpinning human domain-general cognition
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 6, 2024
Abstract
Domain-general
cognitive
systems
are
essential
for
adaptive
human
behaviour,
supporting
various
tasks
through
flexible
neural
mechanisms.
From
decades
of
fMRI
studies,
we
know
that
a
particular
network
frontoparietal
brain
regions
plays
role
in
many
different
kinds
activity,
with
increased
activity
and
information
coding
response
to
increasing
task
demands.
However,
the
electrophysiological
mechanisms
underlying
this
domain-general
demand
remain
unclear.
Here
used
irregular-resampling
auto-spectral
analysis
(IRASA)
separate
aperiodic
oscillatory
components
concurrent
MEG/EEG
signals
analysed
them
multivariate
pattern
(MVPA)
investigate
their
roles
cognition.
We
found
both
(broadband
power,
slope,
intercept)
(theta,
alpha,
beta
power)
coded
content
across
three
tasks.
Aperiodic
broadband
power
strongly
demand,
manner
generalised
all
subtasks,
suggesting
modulation
may
reflect
multiple
sorts
demand.
Source
estimation
suggested
decreased
most
brain,
strongest
modulations
partially
overlapping
multiple-demand
network.
In
contrast,
theta,
alpha
bands
showed
more
localised
patterns
modulation,
primarily
frontal
(beta,
theta)
or
occipital
(alpha,
regions.
The
spatial
demand-related
was
significantly
correlated
space
individuals,
positive
correlations
between
theta
while
were
negatively
power.
These
results
provide
novel
insights
into
underpinnings
cognition,
systems,
changes
being
clearest
correlate
demanding
activity.
Language: Английский