Cell Reports,
Journal Year:
2020,
Volume and Issue:
33(6), P. 108362 - 108362
Published: Nov. 1, 2020
Motivational
states
consist
of
cognitive,
emotional,
and
physiological
components
controlled
by
multiple
brain
regions.
An
integral
component
this
neural
circuitry
is
the
bed
nucleus
stria
terminalis
(BNST).
Here,
we
identify
that
neurons
within
BNST
express
gene
prepronociceptin
(PnocBNST)
modulate
rapid
changes
in
arousal
occur
upon
exposure
to
motivationally
salient
stimuli.
Using
vivo
two-photon
calcium
imaging,
find
PnocBNST
neuronal
responses
directly
correspond
with
increases
pupillary
size
when
mice
are
exposed
aversive
rewarding
odors.
Furthermore,
optogenetic
activation
these
anxiety-like
behaviors
but
does
not
induce
approach,
avoidance,
or
locomotion.
These
findings
suggest
excitatory
encode
anxiety
states.
Further
histological,
electrophysiological,
single-cell
RNA
sequencing
data
reveal
composed
genetically
anatomically
identifiable
subpopulations
may
differentially
tune
motivational
The
bed
nucleus
of
the
stria
terminalis
(BNST)
has
been
implicated
in
conditioned
fear
and
anxiety,
but
specific
factors
that
engage
BNST
defensive
behaviors
are
unclear.
Here
we
examined
whether
mediates
freezing
to
stimuli
(CSs)
poorly
predict
onset
aversive
unconditioned
(USs)
rats.
Reversible
inactivation
selectively
reduced
CSs
signaled
US
(e.g.,
a
backward
CS
followed
US),
did
not
eliminate
forward
even
when
they
predicted
USs
variable
intensity.
Additionally,
(but
forward)
increased
Fos
ventral
BNST-projecting
neurons
infralimbic
region
medial
prefrontal
cortex
(mPFC),
hippocampus
or
amygdala.
These
data
reveal
circuits
regulate
unpredictable
threats,
which
may
be
critical
etiology
expression
anxiety.
Journal of Neuroscience,
Journal Year:
2020,
Volume and Issue:
40(41), P. 7949 - 7964
Published: Sept. 21, 2020
When
extreme,
anxiety—a
state
of
distress
and
arousal
prototypically
evoked
by
uncertain
danger—can
be
debilitating.
Uncertain
anticipation
is
a
shared
feature
situations
that
elicit
signs
symptoms
anxiety
across
psychiatric
disorders,
species,
assays.
Despite
the
profound
significance
for
human
health
wellbeing,
neurobiology
uncertain-threat
remains
unsettled.
Leveraging
paradigm
adapted
from
animal
research
optimized
fMRI
signal
decomposition,
we
examined
neural
circuits
engaged
during
temporally
certain
threat
in
99
men
women.
Results
revealed
systems
recruited
are
anatomically
colocalized
frontocortical
regions,
extended
amygdala,
periaqueductal
gray.
Comparison
conditions
demonstrated
this
circuitry
can
fractionated,
with
regions
showing
relatively
stronger
engagement
threat,
amygdala
reverse
pattern.
Although
there
widespread
agreement
bed
nucleus
stria
terminalis
dorsal
amygdala—the
two
major
subdivisions
amygdala—play
critical
role
orchestrating
adaptive
responses
to
potential
danger,
their
precise
contributions
have
remained
contentious.
Follow-up
analyses
these
show
statistically
indistinguishable
anticipation.
These
observations
provide
framework
conceptualizing
fear,
understanding
functional
neuroanatomy
humans,
accelerating
development
more
effective
intervention
strategies
pathological
anxiety.
SIGNIFICANCE
STATEMENT
Anxiety—an
emotion
associated
harm—has
public
health,
yet
underlying
unclear.
novel
neuroimaging
large
sample,
identify
core
circuit
responsive
both
anticipation,
fractionated
into
bias
one
kind
or
other.
The
occupies
center
stage
neuropsychiatric
models
anxiety,
but
its
architecture
has
Here
demonstrate
threat.
Collectively,
indicate
need
revise
how
think
about
fear.
Journal of Neuroscience,
Journal Year:
2017,
Volume and Issue:
37(40), P. 9645 - 9656
Published: Sept. 11, 2017
The
ability
to
adaptively
regulate
responses
the
proximity
of
potential
danger
is
critical
survival
and
imbalance
in
this
system
may
contribute
psychopathology.
bed
nucleus
stria
terminalis
(BNST)
implicated
defensive
responding
during
uncertain
threat
anticipation
whereas
amygdala
drive
upon
more
acute
danger.
This
functional
dissociation
between
BNST
however
controversial,
human
evidence
scarce.
Here
we
used
data
from
two
independent
magnetic
resonance
imaging
studies
[
n
=
108
males
70
(45
females)]
probe
how
coordination
shock
actual
confrontation.
In
a
subset
participants
Sample
2
(
48)
demonstrate
that
confrontation
evoke
bradycardic
tachycardic
responses,
respectively.
Further,
show
each
sample
when
going
moment
neural
activity
shifted
region
anatomically
consistent
with
toward
amygdala.
Comparisons
connectivity
processing
showed
overlapping
yet
also
consistently
divergent
profiles
for
Finally,
childhood
maltreatment
levels
predicted
amygdala,
but
not
BNST,
hyperactivity
anticipation.
Our
results
support
an
evolutionary
conserved,
distance-dependent
dynamic
balance
activity.
Shifts
enable
shifts
reactions
via
demonstrated
differential
connectivity.
indicate
early
life
stress
tip
route
predispose
affective
disorder.
SIGNIFICANCE
STATEMENT
Previously
proposed
contributions
fear
anxiety
have
been
recently
debated.
Despite
significance
understanding
their
reactions,
there
paucity
directly
compared
these
regions
on
processing.
We
strong
dissociable
role
by
demonstrating
large
participant
samples
they
distinct
temporal
signature
as
well
discriminable
pattern
connections
sensitivity
threat.
Journal of Neuroendocrinology,
Journal Year:
2019,
Volume and Issue:
31(3)
Published: Feb. 20, 2019
Oxytocin
neurones
in
the
hypothalamus
are
activated
by
stressful
stimuli
and
food
intake.
The
oxytocin
receptor
is
located
various
brain
regions,
including
sensory
information‐processing
cerebral
cortex;
cognitive
prefrontal
reward‐related
regions
such
as
ventral
tegmental
areas,
nucleus
accumbens
raphe
nucleus;
stress‐related
areas
amygdala,
hippocampus,
ventrolateral
part
of
ventromedial
periaqueductal
gray;
homeostasis‐controlling
hypothalamus;
dorsal
motor
complex
controlling
intestinal
functions.
affects
behavioural
neuroendocrine
stress
responses
terminates
intake
acting
on
metabolic
or
nutritional
homeostasis
system,
modulating
emotional
processing,
reducing
reward
values
intake,
facilitating
processing
via
multiple
regions.
also
plays
a
role
interactive
actions
between
contributes
to
adaptive
active
coping
behaviours.
Human Brain Mapping,
Journal Year:
2017,
Volume and Issue:
39(3), P. 1291 - 1312
Published: Dec. 12, 2017
The
central
extended
amygdala
(EAc)-including
the
bed
nucleus
of
stria
terminalis
(BST)
and
(Ce)-plays
a
critical
role
in
triggering
fear
anxiety
is
implicated
development
range
debilitating
neuropsychiatric
disorders.
Although
it
widely
believed
that
these
disorders
reflect
coordinated
activity
distributed
neural
circuits,
functional
architecture
EAc
network
degree
to
which
BST
Ce
show
distinct
patterns
connectivity
unclear.
Here,
we
used
novel
combination
imaging
approaches
trace
130
healthy,
racially
diverse,
community-dwelling
adults.
Multiband
imaging,
high-precision
registration
techniques,
spatially
unsmoothed
data
maximized
anatomical
specificity.
Using
newly
developed
seed
regions,
whole-brain
regression
analyses
revealed
robust
between
via
sublenticular
amygdala,
ribbon
subcortical
gray
matter
encompassing
ventral
amygdalofugal
pathway.
Both
regions
displayed
coupling
with
ventromedial
prefrontal
cortex
(vmPFC),
midcingulate
(MCC),
insula,
anterior
hippocampus.
showed
stronger
thalamus,
striatum,
periaqueductal
gray,
several
territories.
only
showing
were
neighboring
dorsal
amygdalohippocampal
area,
These
observations
provide
baseline
against
compare
special
populations,
inform
our
understanding
normal
pathological
anxiety,
showcase
image
techniques
are
likely
be
useful
for
researchers
working
"deidentified"
neuroimaging
data.
Psychopharmacology,
Journal Year:
2018,
Volume and Issue:
236(1), P. 415 - 437
Published: Sept. 25, 2018
Comorbidity
of
anxiety
disorders,
stressor-
and
trauma-related
substance
use
disorders
is
extremely
common.
Moreover,
therapies
that
reduce
pathological
fear
on
the
one
hand,
drug-seeking
other,
often
prove
short-lived
are
susceptible
to
relapse.
Considerable
advances
have
been
made
in
study
neurobiology
both
aversive
appetitive
extinction,
this
work
reveals
shared
neural
circuits
contribute
suppression
relapse
conditioned
responses
associated
with
trauma
or
drug
use.The
goal
review
identify
common
mechanisms
underlying
across
domains
addiction
biology
learning
preclinical
animal
models.
We
focus
primarily
engaged
during
expression
relapse.After
brain
involving
medial
prefrontal
cortex
hippocampus
come
regulate
by
amygdala,
bed
nucleus
stria
terminalis,
accumbens.
During
relapse,
hippocampal
projections
inhibit
retrieval
extinction
memories
resulting
a
loss
inhibitory
control
over
fear-
drug-associated
conditional
responding.The
overlapping
systems
for
may
explain
co-occurrence
behaviors.