Neocortical somatostatin neuron diversity in cognition and learning
Trends in Neurosciences,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Язык: Английский
Auditory cortex ensembles jointly encode sound and locomotion speed to support sound perception during movement
Carlos Arturo Vivaldo,
Joonyeup Lee,
MaryClaire Shorkey
и другие.
PLoS Biology,
Год журнала:
2023,
Номер
21(8), С. e3002277 - e3002277
Опубликована: Авг. 31, 2023
The
ability
to
process
and
act
upon
incoming
sounds
during
locomotion
is
critical
for
survival
adaptive
behavior.
Despite
the
established
role
that
auditory
cortex
(AC)
plays
in
behavior-
context-dependent
sound
processing,
previous
studies
have
found
cortical
activity
on
average
suppressed
as
compared
immobility.
While
suppression
of
responses
self-generated
results
from
corollary
discharge,
which
weakens
predictable
sounds,
functional
weaker
unpredictable
external
remains
unclear.
In
particular,
whether
sound-evoked
reflects
reduced
involvement
AC
processing
or
it
masking
by
an
alternative
neural
computation
this
state
unresolved.
Here,
we
tested
hypothesis
rather
than
simple
inhibition,
reflect
a
tradeoff
with
emergence
explicit
reliable
coding
velocity.
To
test
hypothesis,
first
used
inactivation
behaving
mice
sound-guided
behavior
locomotion.
investigate
nature
two-photon
calcium
imaging
local
excitatory
populations
awake
mice.
We
had
diverse
influences
different
neurons,
net
baseline-subtracted
stimulus
detection,
consistent
studies.
Importantly,
inhibitory
effect
was
strongly
shaped
elevated
ongoing
compressed
response
dynamic
range,
reflecting
enhanced
“noise,”
reliably
encoded
animal’s
speed.
Decoding
analyses
revealed
speed
are
robustly
co-encoded
ensemble
activity.
Finally,
patterns
joint
electrophysiologically
recorded
freely
moving
rats.
Together,
our
data
suggest
being
locomotion,
ensembles
explicitly
encode
alongside
information
support
perception
Язык: Английский
Different state-dependence of population codes across cortex
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Май 26, 2024
During
perceptual
decision-making,
behavioral
performance
varies
with
changes
in
internal
states
such
as
arousal,
motivation,
and
strategy.
Yet
it
is
unknown
how
these
affect
information
coding
across
cortical
regions
involved
differing
aspects
of
sensory
perception
decision-making.
We
recorded
neural
activity
from
the
primary
auditory
cortex
(AC)
posterior
parietal
(PPC)
mice
performing
a
navigation-based
sound
localization
task.
then
modeled
transitions
strategies
used
during
task
performance.
Mice
transitioned
between
three
latent
decision-making
strategies:
an
'optimal'
state
two
'sub-optimal'
characterized
by
choice
bias
frequent
errors.
Performance
strongly
influenced
population
patterns
association
but
not
cortex.
Surprisingly,
individual
PPC
neurons
was
better
explained
external
inputs
variables
suboptimal
than
optimal
state.
Furthermore,
shared
variability
(coupling)
strongest
In
AC,
similarly
weak
all
states.
Together,
findings
indicate
that
more
linked
to
Язык: Английский
Transcriptomic correlates of state modulation in forebrain interneurons: A cross-species analysis
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Дек. 4, 2023
Abstract
GABAergic
inhibitory
interneurons
comprise
many
subtypes
that
differ
in
their
molecular,
anatomical
and
functional
properties.
In
mouse
visual
cortex,
they
also
modulation
with
an
animal’s
behavioural
state,
this
state
can
be
predicted
from
the
first
principal
component
(PC)
of
gene
expression
matrix.
Here,
we
ask
whether
link
between
transcriptome
state-dependent
processing
generalises
across
species.
To
end,
analysed
seven
single-cell
single-nucleus
RNA
sequencing
datasets
mouse,
human,
songbird,
turtle
forebrains.
Despite
homology
at
level
cell
types,
found
clear
differences
transcriptomic
PCs,
greater
dissimilarities
evolutionarily
distant
These
arise
two
factors:
divergence
within
homologous
types
type
abundance.
We
compare
cholinergic
receptors,
which
are
thought
to
causally
modulation.
Several
receptors
predictive
differentially
expressed
Circuit
modelling
mathematical
analyses
suggest
conditions
under
these
could
translate
into
differences.
Язык: Английский