Single-neuron activity reflects visual awareness in human lateral occipital complex
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Март 25, 2025
Abstract
Conscious
perception,
a
critical
aspect
of
human
cognition,
is
assumed
to
emerge
from
complex
network
interacting
brain
regions
that
transmit
information
via
feedforward
and
recurrent
pathways.
This
study
presents
the
first
single-
multiunit
recordings
lateral
occipital
(LO),
key
region
for
shape
object
recognition,
during
three
distinct
perceptual
paradigms:
backward
masking,
flash
suppression
binocular
rivalry.
In
all
paradigms,
conscious
perception
was
required
reliable
stimulus
decoding
neuronal
population
responses.
These
findings
highlight
intricate
neural
mechanisms
underlying
visual
awareness
show
LO
responses
predominantly
align
with
offering
new
insights
into
correlates
consciousness.
Язык: Английский
Conscious tactile perception entails distinct neural dynamics within somatosensory areas
Current Biology,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 1, 2025
Язык: Английский
Neural correlates of consciousness in an auditory no-report fMRI study
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Май 21, 2025
Abstract
In
the
search
for
neural
correlates
of
consciousness
(NCC),
prominent
theories
disagree
about
role
sensory
versus
wide-spread
fronto-parietal
brain
activity.
Research
on
auditory
awareness
has
been
widely
neglected,
and
isolating
NCC
from
task-related
post-perceptual
processes
(e.g.,
report)
is
an
ongoing
challenge.
The
present
study
addressed
these
issues
using
functional
magnetic
resonance
imaging
(fMRI)
during
a
no-report
inattentional
deafness
paradigm.
Sixty-three
participants
performed
distractor
task
while
supra-threshold
but
task-irrelevant
sounds
were
presented
in
background.
Whereas
one
group
was
aware
stimuli,
another
remained
unaware.
Comparing
responses
to
critical
between
unaware
controlling
postperceptual
processing
revealed
that
associated
with
significantly
increased
activity
secondary
not
areas.
These
findings
suggest
dominant
stimulus-specific
rather
than
widespread
information
broadcasting
conscious
perception.
Язык: Английский
Neuroelectric Correlates of Perceptual Awareness During the Auditory Attentional Blink
Brain Sciences,
Год журнала:
2025,
Номер
15(6), С. 537 - 537
Опубликована: Май 22, 2025
Background:
Perceptual
awareness
refers
to
the
conscious
detection
and
identification
of
a
sensory
event.
In
electrophysiological
studies,
it
is
associated
with
modality-specific
negative-going
event-related
potential,
which
can
be
observed
as
early
100–300
ms
after
stimulus
onset.
Method:
this
study,
we
measured
neuroelectric
brain
activity
during
auditory
attentional
blink,
comparing
responses
when
participants
correctly
reported
both
first
(T1)
second
(T2)
targets
versus
only
T1
was
detected,
but
T2
missed.
To
achieve
robust
statistical
power,
pooled
data
across
six
previously
published
studies
for
current
analyses.
Result:
Our
results
revealed
that
accurately
reporting
elicited
greater
negativity
between
150
300
over
frontocentral
central
scalp
areas
following
onset,
compared
trials
where
detected
not.
Additionally,
positive
displacement,
peaking
around
800
central-parietal
area,
followed
negativity.
Successful
also
more
pronounced
alpha
suppression,
at
approximately
500
before
Conclusions:
These
findings
suggest
neural
correlates
what
refer
“auditory
awareness”
occur
sequence
soon
Pre-stimulus
difference
in
power
may
serve
an
indicator
lapses
attention,
reflecting
periods
are
less
engaged
or
off-task.
Язык: Английский