Attentional enhancement and suppression of stimulus-synchronized BOLD oscillations
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 11, 2025
Abstract
Visual
cortical
neurons
synchronize
their
firing
rates
to
periodic
visual
stimuli.
EEG
is
commonly
used
study
directed
attention
by
frequency-tagging
brain
responses
multiple
stimuli
oscillating
at
different
frequencies,
but
limited
its
coarse
spatial
resolution.
Here
we
leverage
fMRI
(ft-fMRI)
the
influence
of
on
fine-grained
spatiotemporal
dynamics
competing
stimulus-driven
oscillations.
Our
analysis
reveals
that
distinct
populations
exhibit
in-phase
(enhancing)
or
anti-phase
(suppressive)
synchronization
with
Directed
homogeneously
increases
amplitude
BOLD
oscillations
across
hierarchy,
consistent
a
distributed
suppressive
field.
In
contrast,
attentional
modulation
hierarchically
from
V1
hV4.
The
strength
anti-phase,
not
in-phase,
predicted
psychophysical
correlates
performance.
results
strongly
corroborate
biased
competition
model
and
unveil
novel
correlate
suppression.
Язык: Английский
Brain state model: A novel method to represent the rhythmicity of object-specific selective attention from magnetoencephalography data
Neurocomputing,
Год журнала:
2025,
Номер
unknown, С. 129920 - 129920
Опубликована: Март 1, 2025
Язык: Английский
Physically activated modes of attentional control
Trends in Cognitive Sciences,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 1, 2024
Язык: Английский
Reward history guides attentional selection in whisker somatosensory (S1) cortex
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 21, 2024
Prior
reward
is
a
potent
cue
for
attentional
capture,
but
the
underlying
neurobiology
largely
unknown.
In
novel
whisker
touch
detection
task,
we
show
that
mice
flexibly
shift
attention
between
specific
whiskers
on
trial-by-trial
timescale,
guided
by
recent
history
of
stimulus-reward
association.
Two-photon
calcium
imaging
and
spike
recordings
revealed
robust
neurobiological
correlate
in
somatosensory
cortex
(S1),
boosting
sensory
responses
to
attended
L2/3
L5,
not
L4.
Attentional
pyramidal
cells
was
topographically
precise
whisker-specific,
shifted
receptive
fields
toward
whisker.
VIP
interneurons
were
broadly
activated
stimuli,
motion,
arousal
did
carry
whisker-specific
signal,
thus
mediate
spatially
focused
tactile
attention.
Together,
these
findings
establish
new
model
focal
mouse
system,
showing
stimuli
rewards
past
can
dynamically
engage
local
modulation
cortical
maps
guide
flexible
shifts
ongoing
behavior.
Язык: Английский
Attentional Biases in Health Decision Making
Advances in finance, accounting, and economics book series,
Год журнала:
2024,
Номер
unknown, С. 1 - 24
Опубликована: Сен. 13, 2024
Attentional
biases
play
a
crucial
role
in
health
decision-making,
influencing
the
choices
individuals
make
regarding
their
well-being.
impact
decisions
by
facilitating
stimulus-directed
processing
of
choices,
which
is
more
superficial
nature.
This
chpater
aims
to
explore
attentional
from
perspective
neuroeconomics,
examining
subjective
value,
cognitive
load,
risk-taking
tendencies,
and
uncertainty
making
decisions.
Stimulus-directed
processing,
along
with
these
variables,
increases
reward
value
certain
stimuli
over
others,
leading
suboptimal
Insights
into
neural
basis
decision-making
offer
predictive
power
behaviors
potential
for
targeted
interventions
mitigate
biases.
Understanding
can
enhance
well-being
informing
strategies
healthier
addressing
related
mental
issues.
Язык: Английский
Hierarchical Organization of Visual Feature Attention Control
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 2, 2024
Abstract
Attention
can
be
deployed
in
anticipation
of
visual
stimuli
based
on
features
such
as
their
color
or
direction
motion.
This
anticipatory
feature-based
attention
involves
top-down
neural
control
signals
from
the
frontoparietal
network
that
bias
cortex
to
enhance
processing
attended
information
and
suppress
distraction.
So,
for
example,
enable
effective
selection
stimulus
while
ignoring
distracting
about
But
well,
focused
more
narrowly,
select
specific
colors
motion
directions
define
task-relevant
events
objects.
One
important
question
remains
open
is
whether
first
biases
broad
feature
dimensions
versus
before
biasing
attributes
(e.g.,
blue
vs.
green).
To
investigate
this,
we
recorded
EEG
activity
during
a
task
where
participants
were
cued
either
attend
(blue
green)
(up
down)
trial-by-trial
basis.
Applying
multivariate
decoding
approaches
alpha
band
(8-12
Hz)
period
(cue-target
interval),
observed
significant
both
(color
motion)
green;
up
down).
Importantly,
temporal
onset
dimension-level
preceded
attribute-level
These
findings
demonstrate
proceeds
hierarchical
fashion,
dimension,
then
narrowing
attribute.
Significance
Statement
During
voluntary
attention,
electrophysiological
neuroimaging
studies
have
highlighted
role
(top-down)
sensory
enhancing
attributes,
but
little
known
how
this
achieved.
In
particular,
it
not
clear
attending
an
attribute
all
structures
coding
dimension
(color/motion)
attribute,
if
directly
only
Using
decoding,
report
follows
organization:
first,
broader
biased,
which
followed
by
Язык: Английский