Ingestible pills reveal gastric correlates of emotions
eLife,
Год журнала:
2024,
Номер
13
Опубликована: Июнь 4, 2024
Although
it
is
generally
held
that
gastrointestinal
(GI)
signals
are
related
to
emotions,
direct
evidence
for
such
a
link
currently
lacking.
One
of
the
reasons
why
internal
milieu
GI
system
poorly
investigated
because
visceral
organs
difficult
access
and
monitor.
To
directly
measure
influence
endoluminal
markers
activity
on
emotional
experience,
we
asked
group
healthy
male
participants
ingest
pill
measured
pH,
pressure,
temperature
their
tract
while
they
watched
video
clips
consistently
induced
disgust,
fear,
happiness,
sadness,
or
control
neutral
state.
In
addition
objective
physiological
activity,
subjective
ratings
perceived
emotions
(i.e.
gastric,
respiratory
cardiac)
sensations
were
recorded,
as
well
changes
in
heart
rate
(HR),
variability
(HRV)
spontaneous
eyes
blinks
non-gastric
behavioral
autonomic
experience.
We
found
when
observed
fearful
disgusting
clips,
reported
perceive
not
only
cardiac
but
also
gastric
sensations,
nausea.
Moreover,
there
was
clear
relation
between
physiology
stomach
emotions.
Specifically,
displayed,
more
acidic
feelings
disgust
fear;
less
happiness.
Complementing
results
deep
realm,
stimuli
significant
increase
HRV
compared
scenarios,
together
with
decrease
HR.
Our
findings
suggest
contribute
unique
states
ingestible
pills
may
open
new
avenues
exploring
deep-body
Язык: Английский
The Transformative Power of Virtual Reality: Redefining Interactions in Virtual Platforms, Education, Healthcare, and Workplaces
Topoi,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 24, 2025
Язык: Английский
Neurophysiological dynamics of visceral signals in emotion, self and bodily consciousness
Proceedings of the Royal Society B Biological Sciences,
Год журнала:
2025,
Номер
292(2048)
Опубликована: Июнь 1, 2025
Bodily
organs
such
as
the
heart
and
lungs
play
a
crucial
role
in
maintaining
physiological
homeostasis
continuous
closed-loop
interaction
with
brain.
Beyond
their
vital
role,
recent
developments
have
emphasized
remarkable
contribution
of
bodily
signals
to
high-level
brain
functions.
A
direct
route
by
which
influence
functioning
is
via
modulation
electrophysiological
dynamics,
turn
influences
integration
processing
emotional
self-related
information
regulating
our
conscious
experience.
Drawing
on
investigations,
we
provide
comprehensive
picture
electrophysiology
interoception
its
emotion,
self
consciousness,
focus
cardiac,
respiratory
gastric
interoception.
We
evidence
that
altered
neurophysiological
responses
might
underlie
deficits
psychopathology.
also
summarize
limited
development
during
infancy
adolescence,
well
describing
some
attempts
investigate
causality
neural
mechanisms
underpinning
number
important
areas
for
further
research
are
highlighted.
Язык: Английский
Increased stomach-brain coupling indexes a dimensional signature of negative mental health symptoms
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 8, 2024
Abstract
Visceral
rhythms
orchestrate
the
physiological
states
underlying
human
emotion.
Chronic
aberrations
in
these
brain-body
interactions
are
implicated
a
broad
spectrum
of
mental
health
disorders.
However,
specific
contributions
gastric-brain
coupling
to
affective
symptoms
remain
poorly
understood.
We
investigated
relationship
between
this
novel
interoceptive
axis
and
243
participants,
using
cross
validated
machine
learning
approach.
find
that
frontal
parietal
brain
gastric
rhythm
indexes
dimensional
signature
spanning
anxiety,
depression,
stress,
well-being.
Control
analyses
confirm
specificity
axis.
Our
study
establishes
stomach
as
factor
pathology
health,
offers
new
targets
for
interventions
remediating
aberrant
coupling.
Язык: Английский
Embodiment of underweight and normal-weight avatars affects bodily self-representations in anorexia nervosa
Heliyon,
Год журнала:
2024,
Номер
10(12), С. e32834 - e32834
Опубликована: Июнь 1, 2024
Body
image
distortion
(BID)
is
a
crucial
aspect
of
anorexia
nervosa
(AN),
leading
to
body
overestimation,
dissatisfaction,
and
low
self-esteem.
BID
significantly
influences
the
onset,
maintenance,
relapse
pathology.
We
assessed
whether
Full
Illusion
(FBI)
using
under
normal-weight
avatars'
bodies
affects
perceptual
schema
estimations
in
both
individuals
with
(AN)
healthy
controls
(HC).
After
each
embodiment
procedure,
we
asked
participants
estimate
width
their
hips
(Perceptual
Image
Task)
minimum
aperture
virtual
door
necessary
pass
through
it
(Body
Schema
Task).
Additionally,
rate
avatars
terms
self-similarity,
attractiveness,
implicit
disgust
(i.e.,
pleasant/unpleasant
odour).
Whereas
AN
(N
=
26)
showed
changes
after
embodying
avatar,
no
were
found
HC
25),
highlighting
increased
bodily
self-plasticity
AN.
Notably,
rated
normal
weight
avatar
as
most
similar
real
body,
which
was
also
considered
least
attractive
repulsive.
These
ratings
correlated
severity.
Furthermore,
at
explicit
level,
all
reported
feeling
thinner
than
usual
underweight
avatar.
Overall,
our
findings
suggest
that
engages
multiple
sensory
channels
(from
visual
olfactory)
components
affective),
offering
potential
targets
for
innovative
non-invasive
treatments
aimed
modifying
flexible
aspects
representation.
Язык: Английский
The thermoception task: a thermal imaging-based procedure for measuring awareness of changes in peripheral body temperature
Journal of Neurophysiology,
Год журнала:
2023,
Номер
130(4), С. 1053 - 1064
Опубликована: Авг. 2, 2023
Although
thermal
body
signals
provide
crucial
information
about
the
state
of
an
organism
and
changes
in
temperature
may
be
a
sign
affective
states
(e.g.,
stress,
pain,
sexual
arousal),
research
on
awareness
is
limited.
Here
we
developed
task
measuring
peripheral
(thermal
interoception)
compared
it
to
classical
heartbeat
counting
(cardiac
interoception).
With
infrared
light
bulb
delivered
stimuli
different
intensities
right
hand
31
healthy
participants.
Thermal
interoceptive
accuracy,
i.e.,
difference
between
participants'
real
perceived
change
temperature,
showed
good
interindividual
variability.
We
found
that
interoception
did
not
correlate
with
(and
was
generally
higher
than)
cardiac
interoception,
suggesting
interceptive
channels
separate
contributions
bodily
states.
Moreover,
results
hint
at
great
salience
need
for
thermoregulation
day-to-day
life.
Finally,
accuracy
associated
self-reported
ability
regulate
distress
by
focusing
sensations.
Our
has
potential
significantly
increase
current
knowledge
role
cognition
behavior,
particularly
social
emotional
contexts.
Язык: Английский
Interoceptive grounding of conceptual knowledge: new insight from an interoceptive-exteroceptive categorization task of concepts
Laura Barca,
Salvatore M.Diana,
Daniela Coutiño Duarte
и другие.
Опубликована: Июль 27, 2024
The
role
of
interoception,
the
perception
internal
bodily
signals,
in
shaping
our
understanding
concepts
remains
an
intriguing
and
understudied
area
research.
Here,
we
investigate
interoceptive
foundation
conceptual
representation,
particularly
for
abstract
compared
to
concrete
ones.
Employing
a
mouse-tracking
paradigm,
participants
categorized
as
(i.e.,
experienced
through
sensations)
or
exteroceptive
five
perceptual
senses),
with
varying
their
degree
grounding
(emotional,
philosophical,
natural,
artifact).
dimension
was
crucial
abstract-emotional
concepts,
revealed
by
lower
likelihood
misclassifying
them
than
abstract-philosophical
Movement
trajectories
showed
implicit
activation
features
during
categorization
concrete-natural
thus
beyond
To
account
individual
differences
attending
performed
cardioception
task
(heartbeat
counting).
Individuals
greater
sensitivity
heartbeat
were
faster
categorization,
when
exteroceptively
categorizing
concepts.
Taken
together,
findings
emphasize
multifaceted
nature
knowledge,
encompassing
dimensions
alongside
others.
Язык: Английский
Investigating the modulation of gastric sensations and disposition toward food with taVNS
Psychophysiology,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 30, 2024
Abstract
Interoception,
the
perception
of
visceral
sensations,
is
key
for
several
survival
functions,
including
those
related
to
feeding
behavior.
Sensations
hunger
and
satiety
are
mediated
by
gastric
signals
transmitted
via
vagus
nerve
Nucleus
Solitary
Tract.
Transcutaneous
auricular
stimulation
(taVNS)
has
been
shown
modulate
brain‐viscera
communication
impact
interoceptive
processing
in
cardiac
domain.
Yet,
its
effect
on
interoception
remains
unclear.
The
aim
this
study
was
investigate
taVNS'
modulatory
effects
using
Water
Load
Test‐II
(WLT‐II)
food‐related
dispositions
through
a
disposition
willingness
eat
task
(DWET).
Participants
underwent
active
or
sham
taVNS
while
performing
WLT‐II
DWET.
Results
showed
no
significant
difference
accuracy
amount
water
ingested
between
groups.
However,
we
found
reduction
food
liking
after
fullness
phase
(vs
sham)
group,
suggesting
an
influence
vagal
activation
inhibition
enjoyment
when
satiated.
These
findings
suggest
that,
may
not
directly
enhance
at
conscious
level,
it
influences
dispositions,
likely
modulating
signals.
Further
research
exploring
intricate
relationship
modulation,
abilities
eating
behaviors
warranted
elucidate
underlying
mechanisms
and,
possibly,
develop
targeted
interventions
disorders.
Язык: Английский
Review of the gastric physiology of disgust: Proto-nausea as an under-explored facet of the gut–brain axis
Sameer N. B. Alladin,
Ruth Judson,
Poppy Whittaker
и другие.
Brain and Neuroscience Advances,
Год журнала:
2024,
Номер
8
Опубликована: Янв. 1, 2024
Humans
feel
visceral
disgust
when
faced
with
potential
contaminants
like
bodily
effluvia.
The
emotion
serves
to
reject
potentially
contaminated
food
and
is
paired
proto-nausea:
alterations
in
gastric
rhythm
response
disgust.
Here,
we
offer
a
narrative
synthesis
of
the
existing
literature
on
effects
stomach
as
measured
through
electrogastrography,
non-invasive
technique
that
measures
activity
electrodes
placed
abdominal
skin
surface.
After
identifying
assessing
368
studies
for
eligibility
inclusion
based
Preferred
Reporting
Items
Systematic
Reviews
Meta-Analyses
process,
reviewed
final
sample
only
10
articles
employed
electrogastrography
assess
responses
unpleasant
stimuli,
including
elicitors.
Reviewed
findings
illustrate
changes
are
associated
negatively
valenced
emotions,
most
reliably
This
rhymes
recent
evidence
causal
role
state
reductions
avoidance.
Because
limitations
body
work
come
from
low
number
relatively
small
sizes,
strongly
encourage
proto-nausea
designs
higher
statistical
power,
ideally
experimental
manipulations
state.
Язык: Английский