Food
seeking
and
avoidance
are
powerful
drivers
of
decision-making
in
healthy
clinical
populations.
The
urge
to
eat
engages
primary
reward
systems
the
brain,
thought
bias
preference
for
energy-dense
or
high-calorie
food
more
likely
sate
hunger.
This
process
is
however
interrupted
eating
disorders
where
avoided.
It
nevertheless
unclear
how
innate
learned
biases
may
interact
with
general
processing
predict
learning
decisions.
We
developed
a
novel
paradigm
investigate
whether
high-
low-calorie
alter
large
sample
participants
typical
(‘TE’)
disordered
(‘DE’)
behavior.
Importantly,
characteristics
(high-
vs.
low-calorie)
were
completely
incidental
task
goal
maximizing
monetary
reward.
An
arousal
manipulation
involving
win
loss,
examined
heightened
arousal,
influence
goal-directed
behavior,
enhances
impact
on
learning.
Consistent
prior
notions
food-relevant
biases,
TE
group
better
(i.e.,
made
correct
choices)
when
foods
rewarding
while
DE
rewarding.
boosted
this
group-dependent
bias.
Fitting
behavior
reinforcement
models
enabled
us
identify
distinct
cognitive
components
underlying
effect.
Specifically,
food-related
was
best
explained
accounting
differences
initial
values
rates
(for
positive
prediction
errors)
foods.
In
other
words,
eaters
showed
their
pre-experimental
type
food,
respectively),
as
well
extent
which
they
from
outcomes
associated
that
preference.
These
findings
provide
mechanistic
account
reward-based
choice,
especially
under
arousal.
Our
results
suggest
interventions
altering
should
target
habit-directed
mechanisms
help
mitigate
maladaptive
Addictive Behaviors Reports,
Journal Year:
2024,
Volume and Issue:
19, P. 100531 - 100531
Published: Jan. 23, 2024
Food
addiction
(FA)
is
characterized
by
behavioral
changes
related
to
the
consumption
of
palatable
foods,
marked
dependence,
impulsivity,
and
compulsion.
Children
adolescents
are
more
vulnerable
FA
owing
their
significant
ultra-processed
foods.
This
review
aims
investigate
differences
in
dietary
intake
pediatric
populations
with
without
FA.
We
conducted
a
systematic
literature
review.
PubMed,
ScienceDirect,
PsycINFO
databases
were
searched
up
July
2023.
Potentially
eligible
studies
independently
checked
two
researchers.
The
methodological
quality
included
was
assessed
using
Joanna
Briggs
Institute
Critical
Appraisal
Checklist
for
analytical
cross-sectional
studies.
Of
4868
articles
identified,
six
included.
All
had
high
quality.
High
calories
fat
observed
children
A
diet
analysis
showed
that
such
as
sugary
drinks,
sweets,
chips,
Given
these
findings,
we
concluded
childhood
may
be
associated
higher
energy
and,
consequently,
macronutrients.
Few
have
examined
relationship
between
food
childhood,
required.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: March 26, 2025
Food
seeking
and
avoidance
engage
primary
reward
systems
to
drive
behavior.
It
is
nevertheless
unclear
whether
innate
or
learned
food
biases
interact
with
general
processing
interfere
goal-directed
choice.
To
this
end,
we
recruited
a
large
non-clinical
sample
of
females
high
eating-disorder
symptoms
('HED')
matched
low
('LED')
complete
reward-learning
task
where
the
calorie
content
stimuli
was
incidental
goal
maximizing
monetary
reward.
We
find
replicate
low-calorie
bias
in
HED
high-calorie
LED,
reflecting
strength
pre-experimental
food-reward
associations.
An
emotional
arousal
manipulation
shifts
group-dependent
across
individual
differences,
interoceptive
awareness
predicting
change.
Reinforcement-learning
models
further
identify
distinct
cognitive
components
supporting
these
group-specific
biases.
Our
results
highlight
influence
reinforcement-based
mechanisms
eliciting
potentially
maladaptive
Disordered
eating
can
disrupt
rewarding
value
food.
Here,
authors
show
female
that
disorder
symptoms,
arousal,
modulate
goal-irrelevant
during
reinforcement
learning.
Addiction Neuroscience,
Journal Year:
2024,
Volume and Issue:
11, P. 100148 - 100148
Published: Jan. 27, 2024
Addiction
is
characterized
by
continued
drug
use
despite
negative
consequences.
In
an
animal
model,
a
subset
of
rats
continues
to
self-administer
cocaine
footshock
consequences,
showing
punishment
resistance.
We
sought
test
the
hypothesis
that
resistance
arises
from
failure
exert
goal-directed
control
over
habitual
seeking.
While
habits
are
not
inherently
permanent
or
maladaptive,
under
conditions
should
encourage
makes
them
maladaptive
and
inflexible.
trained
male
female
Sprague
Dawley
on
seeking-taking
chained
schedule
self-administration.
then
exposed
four
days
testing
in
which
was
delivered
randomly
one-third
trials.
Before
after
(four
pre-punishment
≥
post-punishment),
we
assessed
whether
seeking
using
outcome
devaluation
via
satiety.
found
associated
with
habits,
whereas
sensitivity
increased
control.
Although
for
predicted
responding
pre-punishment,
it
post-punishment.
parallel
studies
food
self-administration,
similarly
observed
post-punishment
but
males,
although
both
pre-
females,
indicating
food-seeking
females.
These
findings
indicate
related
have
become
inflexible
persist
transition
behavior.
British Journal of Pharmacology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 24, 2024
Abstract
The
orexin
(also
known
as
hypocretin)
system,
consisting
of
neuropeptides
orexin‐A
and
orexin‐B,
was
discovered
over
25
years
ago
immediately
identified
a
central
regulator
sleep
wakefulness.
These
peptides
interact
with
two
G‐protein
coupled
receptors,
1
(OX
)
2
receptors
which
are
capable
coupling
to
all
heterotrimeric
subfamilies,
but
primarily
transduce
increases
in
calcium
signalling.
Orexin
neurons
regulated
by
variety
transmitter
systems
environmental
stimuli
that
signal
reward
availability,
including
food
drug
related
cues.
also
activated
anticipation,
stress,
cues
predicting
motivationally
relevant
information,
those
drugs
abuse,
engage
neuromodulatory
systems,
dopamine
the
ventral
tegmental
area
(VTA)
respond
these
signals.
As
such,
have
been
characterized
motivational
activators
coordinate
range
functions,
feeding
arousal,
allow
individual
critical
for
survival.
This
review
focuses
on
role
orexins
appetitive
motivation
highlights
pathologies
inappropriately
high
levels
motivated
arousal
(overeating,
anxiety
substance
use
disorders)
versus
is
impaired
(depression).
Critical Reviews in Food Science and Nutrition,
Journal Year:
2023,
Volume and Issue:
64(31), P. 11575 - 11589
Published: Aug. 1, 2023
Various
roles
of
intestinal
flora
in
the
gut-brain
axis
response
pathway
have
received
enormous
attention
because
their
unique
position
flora-derived
metabolites
regulating
hormones,
inducing
appetite,
and
modulating
energy
metabolism.
Reward
pathways
brain
play
a
crucial
role
communications,
but
mechanisms
not
been
methodically
understood.
This
review
outlined
by
which
leptin,
ghrelin,
insulin
are
influenced
to
regulate
appetite
body
weight,
focused
on
significance
paraventricular
nucleus
ventromedial
prefrontal
cortex
food
reward.
The
vagus
nerve
mitochondria
essential
involved
modulation
neurotransmitters,
neural
signaling,
neurotransmission
communications.
dynamic
nutrient
intake
changes
characteristics
feeding
activity
requires
participation
transmit
messages
be
completed.
SCFAs,
Bas,
BCAAs,
induced
hormones
mediate
sensory
information
reward
signaling
host
complex
regulatory
mechanism
selection,
composition
significantly
impacts
this
process.
Food
process
obesity
based
communications
expands
new
ideas
for
prevention
treatment
obesity.
Journal of the Experimental Analysis of Behavior,
Journal Year:
2023,
Volume and Issue:
121(1), P. 8 - 26
Published: Nov. 27, 2023
Abstract
Habits
have
garnered
significant
interest
in
studies
of
associative
learning
and
maladaptive
behavior.
However,
habit
research
has
faced
scrutiny
challenges
related
to
the
definitions
methods.
Differences
conceptualizations
habits
between
animal
human
create
difficulties
for
translational
research.
Here,
we
review
commonly
used
methods
studying
animals
humans
discuss
potential
alternative
ways
assess
habits,
such
as
automaticity.
To
better
understand
then
focus
on
behavioral
factors
that
been
shown
make
or
break
animals,
well
mechanisms
underlying
influence
these
factors.
We
evidence
habitual
goal‐directed
systems
learn
parallel
they
seem
interact
competitive
cooperative
manners.
Finally,
draw
parallels
responding
compulsive
drug
seeking
delineate
similarities
differences
behaviors.