Neuron,
Journal Year:
2021,
Volume and Issue:
109(18), P. 2928 - 2942.e8
Published: Aug. 13, 2021
The
ability
to
encode
the
direction
of
image
motion
is
fundamental
our
sense
vision.
Direction
selectivity
along
four
cardinal
directions
thought
originate
in
direction-selective
ganglion
cells
(DSGCs)
because
directionally
tuned
GABAergic
suppression
by
starburst
cells.
Here,
utilizing
two-photon
glutamate
imaging
measure
synaptic
release,
we
reveal
that
all
arises
earlier
than
expected
at
bipolar
cell
outputs.
Individual
contained
distinct
populations
axon
terminal
boutons
with
different
preferred
directions.
We
further
show
this
bouton-specific
tuning
relies
on
cholinergic
excitation
from
and
inhibition
wide-field
amacrine
DSGCs
received
both
aligned
inputs
untuned
among
heterogeneously
glutamatergic
bouton
populations.
Thus,
directional
excitatory
visual
pathway
incrementally
refined
terminals
their
recipient
DSGC
dendrites
two
neurotransmitters
co-released
Oxford University Press eBooks,
Journal Year:
2019,
Volume and Issue:
unknown
Published: June 17, 2019
Abstract
The
Brain
from
Inside
Out
takes
a
critical
look
at
contemporary
brain
research
and
reminds
us
that
theoretical
framework
does
matter.
Current
technology-driven
neuroscience
is
still
largely
fueled
by
an
empiricist
philosophy
assuming
the
brain’s
goal
to
perceive,
represent
world,
learn
truth.
An
inevitable
consequence
of
this
assumption
decision-making
homunculus
wedged
between
our
perception
actions.
In
contrast,
advocates
fundamental
function
induce
actions
predict
consequences
those
support
survival
prosperity
host.
Brains
constantly
test
their
hypotheses
producing
rather
than
searching
for
veridical
objective
world.
Only
can
provide
second
opinion
about
relevance
sensory
inputs
meaning
interpretation
inputs.
inside-out
framework,
it
not
sensations
teach
build
up
its
circuits.
Instead,
comes
with
preconfigured
self-organized
dynamics
constrains
how
acts
views
Both
anatomical
physiological
organizations
are
characterized
enormous
diversity
which
spans
several
orders
magnitude.
two
ends
continuous
landscape
give
rise
apparently
distinct
qualitative
features.
A
small
core
strongly
interconnected,
highly
active
neurons
provides
fast
“good-enough”
answers
in
needy
situations
generalizations,
whereas
detailed
precise
solutions
rely
on
contribution
more
isolated
sluggish
majority.
non-egalitarian
organization,
preexisting
nonsense
patterns
become
meaningful
through
action-based
experience.
offers
alternative
strategy
investigate
operations
cognitive
faculties,
as
opposed
outside-in
approach
explores
preconceived
ideas
map
onto
structures.
Cell Reports,
Journal Year:
2022,
Volume and Issue:
40(2), P. 111040 - 111040
Published: July 1, 2022
Classification
and
characterization
of
neuronal
types
are
critical
for
understanding
their
function
dysfunction.
Neuronal
classification
schemes
typically
rely
on
measurements
electrophysiological,
morphological,
molecular
features,
but
aligning
such
datasets
has
been
challenging.
Here,
we
present
a
unified
mouse
retinal
ganglion
cells
(RGCs),
the
sole
output
neurons.
We
use
visually
evoked
responses
to
classify
1,859
RGCs
into
42
types.
also
obtain
morphological
or
transcriptomic
data
from
subsets
these
align
functional
publicly
available
datasets.
create
an
online
database
that
allows
users
browse
download
light
using
machine
learning
algorithm.
This
work
provides
resource
studies
RGCs,
upstream
circuits
in
retina,
projections
brain,
establishes
framework
future
efforts
open
distribution.
Current Biology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 1, 2025
Highlights•Saccades
during
target
pursuit
align
area
centralis
with
intended
direction
of
travel•Saccades
simultaneously
also
retinal
pattern
optic
flow•Post-saccade
eye
and
head
rotation
reduce
image
blur
limit
information
loss•Tree
shrews,
mice,
rats
have
the
same
coordinated
kineticsSummaryDuring
prey
pursuit,
how
rotations,
such
as
saccades,
enable
continuous
tracking
erratically
moving
targets
while
enabling
an
animal
to
navigate
through
environment
is
unknown.
To
better
understand
this,
we
measured
rotations
in
freely
running
ferrets
behavior.
By
all
environmental
features,
reconstructed
animal's
visual
fields
their
relationship
structures.
In
fields,
position
clustered
on
around
high-acuity
location,
centralis,
surprisingly,
this
cluster
was
not
significantly
shifted
by
digital
removal
either
exclusively
elicited
when
made
turns,
or
that
were
tightly
synchronized
saccades.
Here,
show
that,
saccades
did
fixate
they
instead
aligned
travel.
This
features
flow
pattern,
focus
expansion,
used
for
navigation
many
species.
While
initially
rotated
eyes
turn,
followed
countering
ongoing
rotation,
which
reduced
limited
loss
across
field
turns.
As
rotational
tree
rats,
suggest
these
counter-rotations
are
a
generalized
mechanism
mammals
complex
environments
pursuit.Graphical
abstract
Neuron,
Journal Year:
2018,
Volume and Issue:
100(5), P. 1241 - 1251.e7
Published: Dec. 1, 2018
Highlights•Functional
ultrasound
enables
imaging
whole-brain
activity
during
mouse
behavior•Activity
in
87
brain
regions
are
modulated
the
optokinetic
reflex•Reflex-related
were
identified
by
perturbing
retinal
direction
selectivity•A
subset
of
these
regions,
all
thalamus,
independent
eye
motionSummaryLarge
numbers
active
behaviors.
A
high-resolution,
brain-wide
map
could
identify
involved
specific
We
have
developed
functional
to
record
behaving
mice
at
a
resolution
∼100
μm.
detected
visual
stimulation
that
evoked
reflex,
visuomotor
behavior
stabilizes
gaze
both
horizontally
and
vertically.
Using
genetic
model
congenital
nystagmus
incapable
generating
horizontal
we
whose
was
reflex
dependent.
By
blocking
motion
control
animals,
further
separated
depended
on
reflex's
motor
output.
Remarkably,
reflex-dependent
but
motion-independent
located
thalamus.
Our
work
identifies
modules
sensorimotor
integration
provides
an
experimental
approach
monitor
normal
disease
states.
Annual Review of Vision Science,
Journal Year:
2018,
Volume and Issue:
4(1), P. 165 - 192
Published: Aug. 10, 2018
Visual
motion
on
the
retina
activates
a
cohort
of
retinal
ganglion
cells
(RGCs).
This
population
activity
encodes
multiple
streams
information
extracted
by
parallel
circuits.
Motion
processing
in
is
best
studied
direction-selective
circuit.
The
main
focus
this
review
neural
basis
direction
selectivity,
which
has
been
investigated
unprecedented
detail
using
state-of-the-art
functional,
connectomic,
and
modeling
methods.
Mechanisms
underlying
encoding
other
features
broader
RGC
populations
are
also
discussed.
Recent
discoveries
at
both
single-cell
levels
highlight
dynamic
stimulus-dependent
engagement
mechanisms
that
collectively
implement
robust
detection
under
diverse
visual
conditions.