A chromatic feature detector in the retina signals visual context changes
eLife,
Год журнала:
2024,
Номер
13
Опубликована: Окт. 4, 2024
The
retina
transforms
patterns
of
light
into
visual
feature
representations
supporting
behaviour.
These
are
distributed
across
various
types
retinal
ganglion
cells
(RGCs),
whose
spatial
and
temporal
tuning
properties
have
been
studied
extensively
in
many
model
organisms,
including
the
mouse.
However,
it
has
difficult
to
link
potentially
nonlinear
transformations
natural
inputs
specific
ethological
purposes.
Here,
we
discover
a
selectivity
chromatic
contrast
an
RGC
type
that
allows
detection
changes
context.
We
trained
convolutional
neural
network
(CNN)
on
large-scale
functional
recordings
responses
mouse
movies,
then
used
this
search
silico
for
stimuli
maximally
excite
distinct
RGCs.
This
procedure
predicted
centre
colour
opponency
transient
suppressed-by-contrast
(tSbC)
RGCs,
cell
function
is
being
debated.
confirmed
experimentally
these
indeed
responded
very
selectively
Green-OFF,
UV-ON
contrasts.
was
characteristic
transitions
from
ground
sky
scene,
as
might
be
elicited
by
head
or
eye
movements
horizon.
Because
tSbC
performed
best
among
all
at
reliably
detecting
transitions,
suggest
role
providing
contextual
information
(i.e.
ground)
necessary
selection
appropriate
behavioural
other
stimuli,
such
looming
objects.
Our
work
showcases
how
combination
experiments
with
computational
modelling
discovering
novel
stimulus
identifying
their
potential
relevance.
Язык: Английский
Towards a Foundation Model of the Mouse Visual Cortex
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Март 24, 2023
The
complexity
of
neural
circuits
makes
it
challenging
to
decipher
the
brain’s
algorithms
intelligence.
Recent
break-throughs
in
deep
learning
have
produced
models
that
accurately
simulate
brain
activity,
enhancing
our
understanding
computational
objectives
and
coding.
However,
these
struggle
generalize
beyond
their
training
distribution,
limiting
utility.
emergence
foundation
models,
trained
on
vast
datasets,
has
introduced
a
new
AI
paradigm
with
remarkable
generalization
capabilities.
We
collected
large
amounts
activity
from
visual
cortices
multiple
mice
model
predict
neuronal
responses
arbitrary
natural
videos.
This
generalized
minimal
successfully
predicted
across
various
stimulus
domains,
such
as
coherent
motion
noise
patterns.
It
could
also
be
adapted
tasks
prediction,
predicting
anatomical
cell
types,
dendritic
features,
connectivity
within
MICrONS
functional
connectomics
dataset.
Our
work
is
crucial
step
toward
building
models.
As
neuroscience
accumulates
larger,
multi-modal
will
uncover
statistical
regularities,
enabling
rapid
adaptation
accelerating
research.
Язык: Английский
Nitric oxide modulates contrast suppression in a subset of mouse retinal ganglion cells
eLife,
Год журнала:
2025,
Номер
13
Опубликована: Янв. 9, 2025
Neuromodulators
have
major
influences
on
the
regulation
of
neural
circuit
activity
across
nervous
system.
Nitric
oxide
(NO)
has
been
shown
to
be
a
prominent
neuromodulator
in
many
circuits
and
extensively
studied
retina.
Here,
it
associated
with
light
adaptation,
gain
control,
gap
junctional
coupling,
but
its
effect
retinal
output,
specifically
different
types
ganglion
cells
(RGCs),
is
still
poorly
understood.
In
this
study,
we
used
two-photon
Ca
2+
imaging
multi-electrode
array
(MEA)
recordings
measure
light-evoked
RGCs
cell
layer
ex
vivo
mouse
This
approach
allowed
us
investigate
neuromodulatory
effects
NO
type-level.
Our
findings
reveal
that
selectively
modulates
suppression
temporal
responses
distinct
subset
contrast-suppressed
RGC
types,
increasing
their
without
altering
spatial
properties
receptive
fields.
Given
under
photopic
conditions,
release
triggered
by
quick
changes
levels,
propose
these
signal
fast
contrast
higher
visual
regions.
Remarkably,
found
about
one-third
recorded
using
imaging,
exhibited
consistent,
type-specific
adaptational
response
throughout
an
experiment,
independent
NO.
By
employing
sequential-recording
paradigm,
could
disentangle
those
additional
from
drug-induced
modulations.
Taken
together,
our
research
highlights
selective
emphasizes
need
considering
non-pharmacological
changes,
like
such
study
designs.
Язык: Английский
Mammalian Retinal Bipolar Cells: Morphological Identification and Systematic Classification in Rabbit Retina With a Comparative Perspective
The Journal of Comparative Neurology,
Год журнала:
2025,
Номер
533(2)
Опубликована: Фев. 1, 2025
ABSTRACT
Retinal
bipolar
cells
(BCs)
convey
visual
signals
from
photoreceptors
to
more
than
50
types
of
rabbit
retinal
ganglion
(Famiglietti,
2020).
More
40
years
ago,
10–11
were
recognized
in
and
cat
retinas
1981).
Twenty
later,
10
identified
mouse,
rat,
monkey,
while
recent
molecular
genetic
studies
indicate
that
there
are
15
cell
mouse
retina
(Shekhar
et
al.,
2016).
The
present
detailed
study
800
11
Golgi‐impregnated
indicates
14–16
cone
one
type
rod
retina.
These
have
been
carefully
analyzed
terms
dendritic
axonal
morphology
axon
terminal
stratification
with
respect
fiducial
starburst
amacrine
cells.
In
fortuitous
proximity,
several
can
be
related
by
contacts
suggestive
synaptic
connection.
results
compared
other
Homologies
monkey
considered
functional
terms.
Язык: Английский
Task-specific regional circuit adaptations in distinct mouse retinal ganglion cells
Science Advances,
Год журнала:
2025,
Номер
11(17)
Опубликована: Апрель 23, 2025
In
the
mouse
retina,
sustained
ON
alpha
(sONα)
retinal
ganglion
cells
(RGCs)
have
different
dendritic
and
receptive
field
sizes
along
nasotemporal
axis,
with
temporal
sONα
RGCs
likely
playing
a
role
in
visually
guided
hunting.
Thus,
we
hypothesized
that
this
cell
type
also
exhibits
regional
adaptations
signal
processing
these
are
advantageous
for
prey
capture.
Here,
measured
signals
from
individual
at
locations.
We
both
postsynaptic
Ca
2+
dendrites
presynaptic
glutamate
bipolar
(BCs).
found
exhibit,
addition
to
sustained-ON
only
weak
surrounds,
strong
surround
suppression,
which
were
not
present
nasal
RGCs.
This
difference
was
inputs
BCs.
Last,
using
population
models
an
encoder-decoder
paradigm,
showed
might
be
beneficial
detecting
crickets
hunting
behavior.
Язык: Английский
Nitric oxide modulates contrast suppression in a subset of mouse retinal ganglion cells
eLife,
Год журнала:
2024,
Номер
13
Опубликована: Июнь 10, 2024
Neuromodulators
have
major
influences
on
the
regulation
of
neural
circuit
activity
across
nervous
system.
Nitric
oxide
(NO)
has
been
shown
to
be
a
prominent
neuromodulator
in
many
circuits
and
extensively
studied
retina.
Here,
it
associated
with
light
adaptation,
gain
control,
gap
junctional
coupling,
but
its
effect
retinal
output,
specifically
different
types
ganglion
cells
(RGCs),
is
still
poorly
understood.
In
this
study,
we
used
two-photon
Ca
2+
imaging
multi-electrode
array
(MEA)
recordings
measure
light-evoked
RGCs
cell
layer
ex
vivo
mouse
This
approach
allowed
us
investigate
neuromodulatory
effects
NO
type-level.
Our
findings
reveal
that
selectively
modulates
suppression
temporal
responses
distinct
subset
contrast-suppressed
RGC
types,
increasing
their
without
altering
spatial
properties
receptive
fields.
Given
under
photopic
conditions,
release
triggered
by
quick
changes
levels,
propose
these
signal
fast
contrast
higher
visual
regions.
Remarkably,
found
about
one-third
recorded
using
imaging,
exhibited
consistent,
type-specific
adaptational
response
throughout
an
experiment,
independent
NO.
By
employing
sequential-recording
paradigm,
could
disentangle
those
additional
from
drug-induced
modulations.
Taken
together,
our
research
highlights
selective
emphasizes
need
considering
non-pharmacological
changes,
like
such
study
designs.
Язык: Английский
Asymmetric distribution of color-opponent response types across mouse visual cortex supports superior color vision in the sky
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Июнь 5, 2023
Color
is
an
important
visual
feature
that
informs
behavior,
and
the
retinal
basis
for
color
vision
has
been
studied
across
various
vertebrate
species.
While
many
studies
have
investigated
how
information
processed
in
brain
areas
of
primate
species,
we
limited
understanding
it
organized
beyond
retina
other
including
most
dichromatic
mammals.
In
this
study,
systematically
characterized
represented
primary
cortex
(V1)
mice.
Using
large-scale
neuronal
recordings
a
luminance
noise
stimulus,
found
more
than
third
neurons
mouse
V1
are
color-opponent
their
receptive
field
center,
while
surround
predominantly
captures
contrast.
Furthermore,
color-opponency
especially
pronounced
posterior
encodes
sky,
matching
statistics
natural
scenes
experienced
by
unsupervised
clustering,
demonstrate
asymmetry
representations
can
be
explained
uneven
distribution
green-On/UV-Off
response
types
upper
field.
Finally,
simple
model
with
scene-inspired
parametric
stimuli
shows
may
enhance
detection
“predatory”-like
dark
UV-objects
noisy
daylight
scenes.
The
results
from
study
highlight
relevance
processing
system
contribute
to
our
hierarchy
Язык: Английский
Nitric oxide modulates contrast suppression in a subset of mouse retinal ganglion cells
Опубликована: Дек. 13, 2024
Neuromodulators
have
major
influences
on
the
regulation
of
neural
circuit
activity
across
nervous
system.
Nitric
oxide
(NO)
has
been
shown
to
be
a
prominent
neuromodulator
in
many
circuits
and
extensively
studied
retina.
Here,
it
associated
with
light
adaptation,
gain
control,
gap
junctional
coupling,
but
its
effect
retinal
output,
specifically
different
types
ganglion
cells
(RGCs),
is
still
poorly
understood.
In
this
study,
we
used
two-photon
Ca
2+
imaging
multi-electrode
array
(MEA)
recordings
measure
light-evoked
RGCs
cell
layer
ex
vivo
mouse
This
approach
allowed
us
investigate
neuromodulatory
effects
NO
type-level.
Our
findings
reveal
that
selectively
modulates
suppression
temporal
responses
distinct
subset
contrast-suppressed
RGC
types,
increasing
their
without
altering
spatial
properties
receptive
fields.
Given
under
photopic
conditions,
release
triggered
by
quick
changes
levels,
propose
these
signal
fast
contrast
higher
visual
regions.
Remarkably,
found
about
one-third
recorded
using
imaging,
exhibited
consistent,
type-specific
adaptational
response
throughout
an
experiment,
independent
NO.
By
employing
sequential-recording
paradigm,
could
disentangle
those
additional
from
drug-induced
modulations.
Taken
together,
our
research
highlights
selective
emphasizes
need
considering
non-pharmacological
changes,
like
such
study
designs.
Язык: Английский
Nitric oxide modulates contrast suppression in a subset of mouse retinal ganglion cells
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Дек. 23, 2023
Neuromodulators
have
major
influences
on
the
regulation
of
neural
circuit
activity
across
nervous
system.
Nitric
oxide
(NO)
has
been
shown
to
be
a
prominent
neuromodulator
in
many
circuits
and
extensively
studied
retina.
Here,
it
associated
with
light
adaptation,
gain
control,
gap
junctional
coupling,
but
its
effect
retinal
output,
specifically
different
types
ganglion
cells
(RGCs),
is
still
poorly
understood.
In
this
study,
we
used
two-photon
Ca
2+
imaging
multi-electrode
array
(MEA)
recordings
measure
light-evoked
RGCs
cell
layer
ex
vivo
mouse
This
approach
allowed
us
investigate
neuromodulatory
effects
NO
type-level.
Our
findings
reveal
that
selectively
modulates
suppression
temporal
responses
distinct
subset
contrast-suppressed
RGC
types,
increasing
their
without
altering
spatial
properties
receptive
fields.
Given
under
photopic
conditions,
release
triggered
by
quick
changes
levels,
propose
these
signal
fast
contrast
higher
visual
regions.
Remarkably,
found
about
one-third
recorded
using
imaging,
exhibited
consistent,
type-specific
adaptational
response
throughout
an
experiment,
independent
NO.
By
employing
sequential-recording
paradigm,
could
disentangle
those
additional
from
drug-induced
modulations.
Taken
together,
our
research
highlights
selective
emphasizes
need
considering
non-pharmacological
changes,
like
such
study
designs.
Язык: Английский