Predictive learning shapes the representational geometry of the human brain
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 7, 2024
Predictive
coding
theories
propose
that
the
brain
constantly
updates
its
internal
models
of
world
to
minimize
prediction
errors
and
optimize
sensory
processing.
However,
neural
mechanisms
link
encoding
optimization
representations
remain
unclear.
Here,
we
provide
direct
evidence
how
predictive
learning
shapes
representational
geometry
human
brain.
We
recorded
magnetoencephalography
(MEG)
in
participants
listening
acoustic
sequences
with
different
levels
regularity.
Representational
similarity
analysis
revealed
how,
through
learning,
aligned
match
statistical
structure
inputs,
by
clustering
temporally
contiguous
predictable
stimuli.
Crucially,
found
areas
magnitude
shift
correlated
strength
errors.
Furthermore,
using
partial
information
decomposition
that,
were
processed
a
synergistic
network
high-level
associative
areas.
Importantly,
precition
predicted
alignment
during
learning.
Our
findings
large-scale
interactions
engaged
processing
modulate
content
areas,
which
may
enhance
efficiency
perceptual
response
regularities
environment.
Language: Английский
Neural interactions in the human frontal cortex dissociate reward and punishment learning
eLife,
Journal Year:
2024,
Volume and Issue:
12
Published: June 28, 2024
How
human
prefrontal
and
insular
regions
interact
while
maximizing
rewards
minimizing
punishments
is
unknown.
Capitalizing
on
intracranial
recordings,
we
demonstrate
that
the
functional
specificity
toward
reward
or
punishment
learning
better
disentangled
by
interactions
compared
to
local
representations.
Prefrontal
cortices
display
non-selective
neural
populations
punishments.
Non-selective
responses,
however,
give
rise
context-specific
interareal
interactions.
We
identify
a
subsystem
with
redundant
between
orbitofrontal
ventromedial
cortices,
driving
role
of
latter.
In
addition,
find
dorsolateral
insula.
Finally,
switching
mediated
synergistic
two
subsystems.
These
results
provide
unifying
explanation
distributed
cortical
representations
supporting
learning.
Language: Английский
Neural interactions in the human frontal cortex dissociate reward and punishment learning
eLife,
Journal Year:
2023,
Volume and Issue:
12
Published: Nov. 9, 2023
How
human
prefrontal
and
insular
regions
interact
while
maximizing
rewards
minimizing
punishments
is
unknown.
Capitalizing
on
intracranial
recordings,
we
demonstrate
that
the
functional
specificity
toward
reward
or
punishment
learning
better
disentangled
by
interactions
compared
to
local
representations.
Prefrontal
cortices
display
non-selective
neural
populations
punishments.
Non-selective
responses,
however,
give
rise
context-specific
interareal
interactions.
We
identify
a
subsystem
with
redundant
between
orbitofrontal
ventromedial
cortices,
driving
role
of
latter.
In
addition,
find
dorsolateral
insula.
Finally,
switching
mediated
synergistic
two
subsystems.
These
results
provide
unifying
explanation
distributed
cortical
representations
supporting
learning.
Language: Английский
A taxonomy of neuroscientific strategies based on interaction orders
Authorea (Authorea),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 1, 2024
In
recent
decades,
neuroscience
has
advanced
with
increasingly
sophisticated
strategies
for
recording
and
analyzing
brain
activity,
enabling
detailed
investigations
into
the
roles
of
functional
units,
such
as
individual
neurons,
regions,
their
interactions.
Recently,
new
investigation
cognitive
functions
regard
study
higher-order
interactions---that
is,
interactions
involving
more
than
two
regions
or
neurons.
While
methods
focusing
on
units
at
various
levels
offer
valuable
often
complementary
insights,
each
approach
comes
its
own
set
limitations.
this
context,
a
conceptual
map
to
categorize
locate
diverse
could
be
crucial
orient
researchers
guide
future
research
directions.
To
end,
we
define
spectrum
orders
interaction,
namely
framework
that
categorizes
among
neurons
based
number
elements
involved
in
these
We
use
simulation
toy
model
few
case
studies
demonstrate
utility
challenges
exploration
spectrum.
conclude
by
proposing
directions
aimed
enhancing
our
understanding
function
cognition
through
nuanced
methodological
framework.
Language: Английский
Neural interactions in the human frontal cortex dissociate reward and punishment learning
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: May 2, 2023
How
human
prefrontal
and
insular
regions
interact
while
maximizing
rewards
minimizing
punishments
is
unknown.
Capitalizing
on
intracranial
recordings,
we
demonstrate
that
the
functional
specificity
toward
reward
or
punishment
learning
better
disentangled
by
interactions
compared
to
local
representations.
Prefrontal
cortices
display
non-selective
neural
populations
punishments.
Non-selective
responses,
however,
give
rise
context-specific
interareal
interactions.
We
identify
a
subsystem
with
redundant
between
orbitofrontal
ventromedial
cortices,
driving
role
of
latter.
In
addition,
find
dorsolateral
insula.
Finally,
switching
mediated
synergistic
two
subsystems.
These
results
provide
unifying
explanation
distributed
cortical
representations
supporting
learning.
Language: Английский