Frontiers in Neuroscience,
Journal Year:
2025,
Volume and Issue:
19
Published: Jan. 29, 2025
Classical
conditioning
is
a
fundamental
associative
learning
process
in
which
repeated
pairings
of
conditioned
stimulus
(CS)
with
an
unconditioned
(US)
lead
to
the
CS
eliciting
response
(CR).
Previous
research
has
identified
key
neural
regions
involved
processing
reward-predicting
cues
and
mediating
licking
behavior.
However,
mechanisms
that
sustain
high
rates
across
sessions
remain
elusive,
particularly
regarding
how
reward
expectation
represented
on
session-by-session
basis.
While
early
phases
classical
have
been
extensively
studied,
support
consistent
performance
over
time
unclear.
In
this
study,
we
sought
understand
cortical
regions,
posterior
parietal
cortex
(PPC),
contribute
maintaining
CR
sessions.
Using
core
complex
framework
derived
from
Integrated
Information
Theory
(IIT),
explored
dynamics
networks
during
performance.
Our
findings
suggest
while
traditional
functional
connectivity
(FC)
methods
struggled
capture
complexity
sustained
behavioral
engagement,
revealed
notably
PPC,
were
significantly
correlated
enhanced
This
work
suggests
potential
role
PPC
supporting
expectations
responses.
By
applying
investigate
substrates
behavior,
provide
novel
insights
into
interaction
conditioning,
offering
promising
directions
for
future
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: June 26, 2023
Summary
Different
theories
explain
how
subjective
experience
arises
from
brain
activity
1,2
.
These
have
independently
accrued
evidence,
yet,
confirmation
bias
and
dependence
on
design
choices
hamper
progress
in
the
field
3
Here,
we
present
an
open
science
adversarial
collaboration
which
directly
juxtaposes
Integrated
Information
Theory
(IIT)
4,5
Global
Neuronal
Workspace
(GNWT)
6–10
,
employing
a
theory-neutral
consortium
approach
11,12
We
investigate
neural
correlates
of
content
duration
visual
experience.
The
theory
proponents
developed
preregistered
experimental
design,
divergent
predictions,
expected
outcomes,
their
interpretation
12
256
human
subjects
viewed
suprathreshold
stimuli
for
variable
durations
while
was
measured
with
functional
magnetic
resonance
imaging,
magnetoencephalography,
electrocorticography.
find
information
about
conscious
visual,
ventro-temporal
inferior
frontal
cortex,
sustained
responses
occipital
lateral
temporal
cortex
reflecting
stimulus
duration,
content-specific
synchronization
between
early
areas.
results
confirm
some
predictions
IIT
GNWT,
substantially
challenging
both
theories:
IIT,
lack
within
posterior
contradicts
claim
that
network
connectivity
specifies
consciousness.
GNWT
is
challenged
by
general
ignition
at
offset
limited
representation
certain
dimensions
prefrontal
cortex.
Beyond
themselves,
alternative
to
advance
cognitive
neuroscience
through
principled,
theory-driven,
collaborative
effort.
highlight
challenges
change
people’s
mind
13
need
quantitative
framework
integrating
evidence
systematic
testing
building.
Neuron,
Journal Year:
2024,
Volume and Issue:
112(10), P. 1531 - 1552
Published: March 5, 2024
How
is
conscious
experience
related
to
material
brain
processes?
A
variety
of
theories
aiming
answer
this
age-old
question
have
emerged
from
the
recent
surge
in
consciousness
research,
and
some
are
now
hotly
debated.
Although
most
researchers
so
far
focused
on
development
validation
their
preferred
theory
relative
isolation,
article,
written
by
a
group
scientists
representing
different
theories,
takes
an
alternative
approach.
Noting
that
various
often
try
explain
aspects
or
mechanistic
levels
consciousness,
we
argue
do
not
necessarily
contradict
each
other.
Instead,
several
them
may
converge
fundamental
neuronal
mechanisms
be
partly
compatible
complementary,
multiple
can
simultaneously
contribute
our
understanding.
Here,
consider
unifying,
integration-oriented
approaches
been
largely
neglected,
seeking
combine
valuable
elements
theories.
How
is
the
information-processing
architecture
of
human
brain
organised,
and
how
does
its
organisation
support
consciousness?
Here,
we
combine
network
science
a
rigorous
information-theoretic
notion
synergy
to
delineate
‘synergistic
global
workspace’,
comprising
gateway
regions
that
gather
synergistic
information
from
specialised
modules
across
brain.
This
then
integrated
within
workspace
widely
distributed
via
broadcaster
regions.
Through
functional
MRI
analysis,
show
correspond
brain’s
default
mode
network,
whereas
broadcasters
coincide
with
executive
control
network.
We
find
loss
consciousness
due
general
anaesthesia
or
disorders
corresponds
diminished
ability
integrate
information,
which
restored
upon
recovery.
Thus,
coincides
breakdown
integration
work
contributes
conceptual
empirical
reconciliation
between
two
prominent
scientific
theories
consciousness,
Global
Neuronal
Workspace
Integrated
Information
Theory,
while
also
advancing
our
understanding
supports
through
information.
Consciousness and Cognition,
Journal Year:
2024,
Volume and Issue:
119, P. 103653 - 103653
Published: Feb. 28, 2024
Recent
activities
in
virtually
all
fields
engaged
consciousness
studies
indicate
early
signs
of
a
structural
turn,
where
verbal
descriptions
or
simple
formalisations
conscious
experiences
are
replaced
by
tools,
most
notably
mathematical
spaces.
My
goal
here
is
to
offer
three
comments
that,
my
opinion,
essential
avoid
misunderstandings
these
developments
on.
These
concern
metaphysical
premises
approaches,
the
viability
structure-preserving
mappings,
and
question
what
structure
experience
first
place.
I
will
also
explain
what,
great
promises
methodologies
how
they
might
impact
science
at
large.
PLoS ONE,
Journal Year:
2025,
Volume and Issue:
20(2), P. e0318863 - e0318863
Published: Feb. 27, 2025
A
major
debate
in
the
field
of
consciousness
pertains
to
whether
neuronal
activity
or
rather
causal
structure
neural
circuits
underlie
generation
conscious
experience.
The
former
position
is
held
by
theoretical
accounts
based
on
predictive
processing
framework
(such
as
neurorepresentationalism
and
active
inference),
while
latter
posited
integrated
information
theory.
This
protocol
describes
an
experiment,
part
a
larger
adversarial
collaboration,
that
was
designed
address
this
question
through
combination
behavioral
tests
mice,
functional
imaging,
patterned
optogenetics
electrophysiology.
experiment
will
directly
test
if
optogenetic
inactivation
portion
visual
cortex
not
responding
behaviorally
relevant
stimuli
affect
perception
spatial
distribution
these
stimuli,
even
when
neurons
being
inactivated
display
no
very
low
spiking
activity,
so
it
does
induce
significant
effect
other
cortical
areas.
results
be
compared
against
predictions,
provide
contribution
towards
understanding
what
substrate
is.
Consciousness and Cognition,
Journal Year:
2024,
Volume and Issue:
119, P. 103668 - 103668
Published: Feb. 27, 2024
How
deep
is
the
current
diversity
in
panoply
of
theories
to
define
consciousness,
and
what
extent
do
these
share
common
denominators?
Here
we
first
examine
different
are
commensurable
(or
comparable)
along
particular
dimensions.
We
posit
logical
(and,
when
applicable,
empirical)
commensurability
as
a
necessary
condition
for
identifying
denominators
among
theories.
By
consequence,
dimensions
inclusion
set
logically
empirically
consciousness
can
be
proposed.
Next,
compare
limited
subset
neuroscience-based
terms
commensurability.
This
analysis
does
not
yield
denominator
that
might
serve
minimally
unifying
model
consciousness.
Theories
seem
akin
by
one
remote
another.
suggest
methodology
comparing
via
multiple
probing
questions,
allowing
discern
overall
(dis)similarities
between
Despite
very
background
definitions
conclude
that,
if
attention
paid
search
methological
approach
brain-consciousness
relationships,
it
should
possible
principle
overcome
Babylonian
confusion
tongues
eventually
integrate
merge