Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Дек. 27, 2024
Integrating
spatial
and
temporal
information
is
essential
for
our
sensory
experience.
While
psychophysical
evidence
suggests
dependencies
in
duration
perception,
few
studies
have
directly
tested
the
neural
link
between
processing.
Using
ultra-high-field
functional
MRI
neuronal-based
modeling,
we
investigated
how
where
processing
representation
of
a
visual
stimulus
linked
to
that
its
location.
Our
results
show
transition
coding:
from
monotonic
spatially-dependent
early
cortex
unimodal
spatially-invariant
frontal
cortex.
Along
dorsal
stream,
particularly
intraparietal
sulcus
(IPS),
neuronal
populations
common
selective
responses
both
information.
In
IPS,
topographic
organizations
are
also
linked,
although
maps
smaller,
less
clustered,
more
variable
across
participants.
These
findings
help
identify
mechanisms
underlying
human
perception
characterize
time
space
processing,
highlighting
importance
their
interactions
shaping
brain
responses.
Common
organizational
principles
not
fully
understood.
This
study
shows
coding
brief
events
transforms
along
cortical
hierarchy,
interact
through
representations.
Frontiers in Computational Neuroscience,
Год журнала:
2023,
Номер
17
Опубликована: Май 17, 2023
Rhythmicity
permeates
large
parts
of
human
experience.
Humans
generate
various
motor
and
brain
rhythms
spanning
a
range
frequencies.
We
also
experience
synchronize
to
externally
imposed
rhythmicity,
for
example
from
music
song
or
the
24-h
light-dark
cycles
sun.
In
context
music,
humans
have
ability
perceive,
generate,
anticipate
rhythmic
structures,
example,
“the
beat.”
Experimental
behavioral
studies
offer
clues
about
biophysical
neural
mechanisms
that
underlie
our
abilities,
different
areas
are
involved
but
many
open
questions
remain.
this
paper,
we
review
several
theoretical
computational
approaches,
each
centered
at
levels
description,
address
specific
aspects
musical
generation,
perception,
attention,
perception-action
coordination,
learning.
survey
methods
results
applications
dynamical
systems
theory,
neuro-mechanistic
modeling,
Bayesian
inference.
Some
frameworks
rely
on
synchronization
intrinsic
span
relevant
frequency
range;
some
formulations
involve
real-time
adaptation
schemes
error-correction
align
phase
dedicated
circuit;
others
learning
dynamically
adjusting
expectations
make
rhythm
tracking
predictions.
Each
while
initially
designed
answer
questions,
offers
possibility
being
integrated
into
larger
framework
provides
insights
perceive
patterns.
Abstract
Dancing
to
music
is
ancient
and
widespread
in
human
cultures.
While
dance
shows
great
cultural
diversity,
it
often
involves
nonvocal
rhythmic
movements
synchronized
musical
beats
a
predictive
tempo-flexible
manner.
To
date,
the
only
nonhuman
animals
known
spontaneously
move
this
way
are
parrots.
This
paper
proposes
that
human-parrot
similarities
movement
neurobiology
of
advanced
vocal
learning
hold
clues
evolutionary
foundations
dance.
The
proposal
draws
on
recent
research
parrot
by
Jarvis
colleagues
cortical
model
for
speech
motor
control
Hickock
colleagues.
These
two
lines
work
synthesized
suggest
gene
regulation
changes
associated
with
evolution
dorsal
laryngeal
pitch
pathway
ancestral
humans
fortuitously
strengthened
auditory-parietal
connections
support
beat-based
processing.
More
generally,
aims
explain
how
why
strong
forebrain
auditory-motor
integration
service
learned
led
capacity
proclivity
synchronize
beat.
specifies
brain
pathways
implicated
origins
dancing
leads
testable
predictions
suggestions
future
research.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Ноя. 2, 2024
Despite
music's
omnipresence,
the
specific
neural
mechanisms
responsible
for
perceiving
and
anticipating
temporal
patterns
in
music
are
unknown.
To
study
potential
keeping
time
rhythmic
contexts,
we
train
a
biologically
constrained
RNN,
with
excitatory
(E)
inhibitory
(I)
units,
on
seven
different
stimulus
tempos
(2–8
Hz)
synchronization
continuation
task,
standard
experimental
paradigm.
Our
trained
RNN
generates
network
oscillator
that
uses
an
input
current
(context
parameter)
to
control
oscillation
frequency
replicates
key
features
of
dynamics
observed
recordings
monkeys
performing
same
task.
We
develop
reduced
three-variable
rate
model
analyze
its
dynamic
properties.
By
treating
our
understanding
mathematical
structure
oscillations
as
predictive,
confirm
dynamical
found
also
RNN.
neurally
plausible
reveals
E-I
circuit
two
distinct
sub-populations,
which
one
is
tightly
synchronized
units.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Март 12, 2024
Summary
Synchronizing
movements
to
music
is
one
of
the
hallmarks
human
culture
whose
evolutionary
and
neurobiological
origins
remain
unknown.
The
ability
synchronize
requires
1)
detecting
a
steady
rhythmic
pulse,
or
beat,
out
stream
complex
sounds,
2)
projecting
this
pattern
forward
in
time
predict
future
input,
3)
timing
motor
commands
anticipation
predicted
beats.
Here,
we
demonstrate
that
macaque
capable
synchronizing
taps
subjective
beat
real
music,
even
spontaneously
chooses
do
so
over
alternative
strategies.
This
contradicts
influential
“vocal
learning
hypothesis”
musical
synchronization
only
possible
species
with
vocalizations
such
as
humans
some
songbirds.
We
propose
an
view
perception
continuum
onto
which
wider
range
can
be
mapped
depending
on
their
perform
coordinate
general
abilities
listed
above
through
association
reward.
We
determined
the
intersubject
association
between
rhythmic
entrainment
abilities
of
human
subjects
during
a
synchronization-continuation
tapping
task
(SCT)
and
macro-
microstructural
properties
their
superficial
(SWM)
deep
(DWM)
white
matter.
Diffusion-weighted
images
were
obtained
from
32
who
performed
SCT
with
auditory
or
visual
metronomes
five
tempos
ranging
550
to
950
ms.
developed
method
determine
density
short-range
fibers
that
run
underneath
cortical
mantle,
interconnecting
nearby
regions
(U-fibers).
Notably,
individual
differences
in
U-fibers
right
audiomotor
system
correlated
degree
phase
accuracy
stimuli
taps
across
subjects.
These
correlations
specific
synchronization
epoch
around
1.5
Hz.
In
addition,
significant
was
found
bundle
diameter
corpus
callosum
(CC),
forming
an
interval-selective
map
where
short
long
intervals
behaviorally
anterior
posterior
portions
CC.
findings
suggest
structural
SWM
DWM
support
subjects,
as
U-fiber
is
linked
preferred
tempo
CC
define
topography.
