bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 15, 2024
ABSTRACT
Social
play
is
a
highly
active
social
interaction,
characterized
by
rapid
exchanges
of
various
behaviors
with
multiple
partners.
Many
primates
use
bodily
expressions
during
play,
yet
the
potential
signaling
function
these
remains
unclear.
This
study
investigated
whether
common
marmosets
(
Callithrix
jacchus)
body
posture
as
signal
to
regulate
play.
We
recorded
within
three
captive
marmoset
family
groups
using
cameras
simultaneously
capture
fast-paced
and
high
frequency
behaviors.
Three
distinct
signals
(i.e.
supine,
hide,
stalk)
six
types
wrestle,
chase,
pounce,
touch,
catch,
pull)
were
identified.
used
multi-state
time-to-event
model
analyze
sequences
including
short-and
long-term
transitions
between
different
states
signal,
or
rest/nothing).
Our
data-driven
approach
accounted
for
uncertainty
in
duration
bouts,
probabilistic
classification
rather
than
arbitrary
bout
thresholds.
The
resulting
classifications
allowed
us
assess
comparing
behavior
resting
state
baseline.
found
that
presence
signal:
(1)
increases
probability
play;
(2)
extends
(3)
leads
more
diverse
(4)
fighting.
Marmosets
also
show
turn-taking
initiating
subsequential
These
results
postures
communicative
initiate
change
dynamics,
thereby
establish
mutual
understanding
joint
action.
two-fold
contribution
this
concerns
novel
analytical
methods
deeper
conceptual
primate
communication.
Play
its
are
important
elements
evolution
language,
our
research
contributes
further
understanding.
Frontiers in Human Neuroscience,
Год журнала:
2025,
Номер
19
Опубликована: Фев. 7, 2025
Healthy
cognitive
aging
emphasizes
preserving
functions
essential
for
independence
and
well-being.
Developing
interventions
that
promote
cognition
resilience
in
older
individuals
is
crucial.
Social
playfulness,
characterized
by
spontaneity
mutual
enjoyment,
allows
to
step
away
from
routine
roles
engage
novel
surprising
exchanges.
Emerging
evidence
suggests
social
playfulness
a
promising
approach
supporting
joyful
engaging
way.
In
this
theory
hypothesis
manuscript,
we
propose
neurobiological
pathway
mediating
the
effects
of
on
cognition.
Playful
interactions
generate
high
levels
uncertainty,
requiring
continuous
adaptation
exploration.
We
suggest
these
demands
locus
coeruleus-noradrenaline
(LC-NA)
system,
which
crucial
navigating
uncertainty
sustaining
arousal
flexibility
needed
adapt
dynamic
unpredictable
nature
playful
interactions.
Importantly,
collaborative
safe
environment
transforms
uncertainty-driven
noradrenergic
activation
into
an
rewarding
experience,
enhancing
focus,
positive
affect,
flexibility.
adults,
where
LC-NA
functionality
may
decline
with
age,
could
counteract
upregulating
system.
review
linking
integrity
health
explore
how
might
mitigate
deterioration
functioning
training
executive
promoting
novelty
This
framework
bridges
neuroscience,
psychology,
creative-arts
therapies,
highlighting
as
tool
healthy
aging.
emphasize
need
further
research
validate
its
implications
designing
leverage
enhance
populations.
Current Biology,
Год журнала:
2024,
Номер
34(16), С. 3654 - 3664.e6
Опубликована: Июль 24, 2024
Social
play
is
pervasive
in
juvenile
mammals,
yet
it
poorly
understood
terms
of
its
underlying
brain
mechanisms.
Specifically,
we
do
not
know
why
young
animals
are
most
playful
and
adults
cease
to
social
play.
Here,
analyze
the
synaptic
mechanisms
We
found
that
blocking
rat
periaqueductal
gray
(PAG)
interfered
with
Furthermore,
an
age-related
decrease
neural
firing
PAG
associated
a
release
glycine.
Most
importantly,
modulation
glycine
concentration-apparently
acting
on
glycinergic
binding
site
N-methyl-D-aspartate
(NMDA)
receptor-not
only
strongly
modulates
but
can
also
reverse
decline
In
conclusion,
demonstrate
critically
depends
neurotransmitter
within
PAG.
Neuroscience & Biobehavioral Reviews,
Год журнала:
2024,
Номер
161, С. 105621 - 105621
Опубликована: Март 12, 2024
Social
play
has
been
described
in
many
animals.
However,
much
of
this
social
behaviour
among
birds,
particularly
adults,
is
still
relatively
unexplored
terms
the
environmental,
psychological,
and
dynamics
play.
This
paper
provides
an
overview
what
we
know
about
adult
birds
addresses
areas
which
subtleties
distinctions,
such
as
initiation
organisation
its
relationship
to
expressions
play,
are
considered
detail.
The
considers
emotional,
social,
innovative,
cognitive
aspects
then
environmental
conditions
affiliative
bonds,
suggesting
a
surprisingly
complex
framework
criteria
awaiting
further
research.
Adult
so
far
studied
only
small
number
avian
species,
exclusively
those
with
large
brain
relative
body
size
without
necessarily
addressing
functions
lateralization.
When
lateralization
function
considered,
it
can
illuminate
possibly
significant
relevance
evolution
cognition,
management
emotions,
development
sociality.
Play
fighting
has
been
one
of
the
most
intensely
studied
forms
play
and
so
provided
some
our
deepest
insights
into
understanding
in
general.
As
label
implies,
this
behavior
resembles
serious
fighting,
that
animals
compete
for
an
advantage
over
another,
but
unlike
true
aggression,
to
remain
playful,
it
also
incorporates
a
degree
cooperation
reciprocity
–
restrained
competition
seems
be
its
hallmark.
Despite
these
common
features,
should
noted
both
competed
mechanisms
by
which
restraint
is
achieved
varies
across
species.
Such
variation
mitigates
simple
generalities.
For
example,
how
empirical
support
proposed
adaptive
function
species
not
being
replicated
interpreted.
What
emerged
past
few
decades
diverse,
varying
several
dimensions,
superficial,
fundamental,
making
choosing
compare
challenge.
In
paper,
we
explore
various
design
features
constitute
ways
can
modified
different
lineages
Given
major
pillar
ethology
description
precedes
explanation,
having
good
grasp
behavioral
diversity
essential
starting
point
detailed
analyses
functions
play.
We
show
commonalities
likely
involve
than
do
idiosyncrasies,
styles
afford
opportunities.
Psychopharmacology,
Год журнала:
2024,
Номер
unknown
Опубликована: Фев. 29, 2024
Abstract
Rationale
Genetic
and
environmental
factors
cause
neuropsychiatric
disorders
through
complex
interactions
that
are
far
from
understood.
Loss-of-function
mutations
in
synaptic
proteins
like
neurexin1α
have
been
linked
to
autism
spectrum
(ASD)
schizophrenia
(SCZ),
both
characterised
by
problems
social
behaviour.
Childhood
play
behaviour
is
thought
facilitate
development,
lack
of
may
precipitate
or
exacerbate
ASD
SCZ.
Objective
To
test
the
hypothesis
an
insult
acts
on
top
genetic
vulnerability
psychiatric-like
phenotypes.
aim,
knockout
rats
was
assessed,
with
without
deprivation
juvenile
play.
We
also
tested
drugs
prescribed
SCZ
assess
relevance
this
dual-hit
model
for
these
disorders.
Results
Neurexin1α
showed
aberrant
phenotype,
high
amounts
play,
increased
motivation
age-inappropriate
sexual
mounting,
increase
general
activity.
Play
subtly
altered
later
behaviour,
but
did
not
affect
phenotype
rats.
Risperidone
methylphenidate
decreased
wild-type
Amphetamine-induced
hyperactivity
exaggerated
Conclusion
Deletion
gene
causes
which
modified
deprivation.
This
therefore
resembles
disinhibited
rather
than
withdrawal
seen
The
rat
could
be
a
inappropriate
childhood
mental
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Июль 11, 2024
Abstract
Like
many
mammals,
as
juveniles,
rats
engage
in
play
fighting,
which
the
laboratory
is
typically
studied
dyads,
and
consequently,
it
researcher
who
determines
a
rat’s
partner.
In
real-life
conditions,
rat
would
have
partners
with
whom
to
play.
previous
study,
we
found
that
do
prefer
some
individuals
more
than
others,
surprisingly,
when
given
choice,
unfamiliar
are
preferred
familiar
ones.
this
assessed
partner
choice
all
available
strangers.
Eight
groups
of
six
juvenile
male
were
observed
for
10
min
trials.
One
each
group
was
selected
‘focal’
his
towards,
received
by,
others
scored.
Social
networks
revealed
five
eight
formed
preferences,
also
engaging
focal
rat.
The
mechanism
by
these
preferences
remains
be
determined,
but
seems
there
individual
differences,
potentially
amount
style
play,
allow
an
select
most
suitable
from
Frontiers in Veterinary Science,
Год журнала:
2025,
Номер
12
Опубликована: Янв. 28, 2025
Play
behaviour
has
been
suggested
to
be
inherently
rewarding
for
animals,
inducing
positive
emotional
states.
The
psychophysiological
effect
of
emotions
can
assessed
through
heart
rate
variability
(HRV),
serving
as
a
proxy
measure
sympathovagal
balance.
This
study
investigated
how
the
performance
play
influences
(HR)
and
HRV
parameters
(RMSSD,
SDNN)
in
pigs.
It
was
hypothesized
that
would
increase
during
immediately
after
due
predominant
vagal
activation
compared
baseline,
indicating
state.
Gilts
(
n
=
32,
18
19
weeks
age),
housed
standard
partly-slatted
pens,
were
selected
from
two
pen-level
treatments:
Novelty
(NOV)
Pen
(PLP).
treatment
pigs
reared
with
intermittent
promotion
(3x/week)
10
age.
For
recordings,
promoted
15-min
pairs
gilts
within
treatment,
destructible
novel
objects
given
either
home
pen
(NOV,
1
m
2
/pig),
or
an
enclosed
‘playpen’
area
providing
extra
space
(PLP,
2.9
/
pig).
measured
session
three
consecutive
periods:
(i)
baseline
(before
bout,
no
occurring),
(ii)
bout
(play
expression),
(iii)
after-play
(immediately
bout).
Twenty-six
played
at
least
once.
bouts
lasted
between
30
s
(10
s:
60,
20
18,
6).
In
10-s
bouts,
RMSSD
higher
p
0.027)
0.015),
while
SDNN
increased
≤
0.001)
0.008)
only
ambulation
(pig
moving
forward:
walking
running).
HR
did
not
differ
across
periods
but
0.003).
Twenty-sec
followed
same
relationship
numerical
differences,
30-s
differ.
Treatments
influence
HRV.
Results
suggest
engaging
increases
HRV,
this
persisting
into
period
play.
indicates
contributes
states
Physical
activity
involved
More
dynamic
energetic
involving
might
more
provides
evidence
assessing
underscores
importance
incorporating
experiences
conventional
farming
practices.