Communications Biology,
Journal Year:
2024,
Volume and Issue:
7(1)
Published: Oct. 18, 2024
Offset
responses
are
traditionally
viewed
as
indicators
of
sound
cessation.
Here,
we
investigate
offset
to
auditory
click
trains,
examining
how
they
modulated
by
inter-click
intervals
(ICIs)
and
train
duration.
Using
extracellular
recordings
electrocorticography
(ECoG)
in
non-human
primates,
alongside
electroencephalography
(EEG)
humans,
show
that
significantly
influenced
both
ICI
length,
thereby
establishing
them
markers
temporal
integration.
We
introduce
the
concept
'Neuronal
Integrative
Window'
(NIW),
defined
span
during
which
neurons
integrate
stimuli
produce
or
modulate
integration
signal.
Our
data
reveal
on
neuronal
level,
cortex
(AC)
exhibits
a
more
expansive
NIW
than
medial
geniculate
body
(MGB),
integrating
over
longer
durations
showing
preference
for
larger
ICIs.
Furthermore,
our
results
indicate
could
serve
potential
biomarkers
neurological
psychiatric
conditions,
highlighted
their
sensitivity
pharmacological
modulation
with
ketamine.
This
study
advances
understanding
processing
proposes
novel
approach
assessing
monitoring
brain
health.
Cell Reports,
Journal Year:
2025,
Volume and Issue:
44(4), P. 115538 - 115538
Published: April 1, 2025
Under
the
predictive
coding
framework,
brain
generates
a
model
of
environment
based
on
previous
experiences.
Incoming
sensory
information
is
compared
to
this
model,
such
that
if
predictions
do
not
match
inputs,
prediction
error
generated.
Predictions
are
passed
top-down,
and
errors
emerge
when
bottom-up
does
predictions.
Prediction
occur
sequentially
in
primary
auditory
cortex
(A1)
then
medial
prefrontal
(mPFC).
Here,
we
test
hypothesis
mPFC
sends
contribute
generation
errors.
We
used
optogenetics
block
top-down
signals
from
while
recording
neuronal
A1
under
classical
"oddball"
paradigm.
Blocking
reduces
response
rare
sounds,
it
affect
responses
predictable
or
random
sounds.
Our
results
provide
empirical
evidence
for
enhance
unpredicted
stimuli.
STAR Protocols,
Journal Year:
2024,
Volume and Issue:
5(3), P. 103252 - 103252
Published: Aug. 10, 2024
The
neural
mechanisms
of
novelty
detection,
especially
in
relation
to
behavior,
are
currently
poorly
understood.
Here,
we
present
a
protocol
for
recording
neuronal
activity
macaque
auditory
cortex
during
detection
tasks.
We
describe
steps
behavioral
training,
surgical
headpost
implantation,
MRI-based
electrode
targeting,
and
electrophysiological
recording.
These
allow
direct
assessment
the
correlation
between
behavior
activity.
For
complete
details
on
use
execution
this
protocol,
please
refer
Gong
et
al.
The
Inferior
Colliculus
(IC)
has
traditionally
been
regarded
as
an
important
relay
in
the
auditory
pathway,
primarily
involved
relaying
information
from
brainstem
to
thalamus.
However,
this
study
uncovers
multifaceted
role
of
IC
bridging
processing,
sensory
prediction,
and
reward
prediction.
Through
extracellular
recordings
monkeys
engaged
a
sound
duration-based
deviation
detection
task,
we
observed
“climbing
effect”
neuronal
firing
rates,
indicative
enhanced
response
over
sequences
linked
prediction
rather
than
anticipation.
Moreover,
our
findings
demonstrate
errors
within
IC,
highlighting
its
complex
integration
processing.
Further
analysis
revealed
direct
correlation
between
activity
behavioral
choices,
suggesting
involvement
decision-making
processes.
This
research
highlights
more
for
understood,
showcasing
integral
cognitive
processing
emphasizing
importance
integrated
brain
functions.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 5, 2025
Abstract
Stimulus-specific
adaptation
(SSA)
is
a
ubiquitous
phenomenon
in
the
animal
kingdom
across
sensory
modalities,
but
this
type
of
neural
response
has
rarely
been
studied
using
natural
sounds
auditory
brain.
Here,
we
leveraged
well-documented
acoustic
repertoire
bat
species
Carollia
perspicillata
to
study
brain
communication
sounds.
We
searched
for
SSA
single
neuron
spiking
activity
measured
two
areas
simultaneously:
cortex
and
frontal
field.
The
stimuli
consisted
distress
syllables,
form
vocalization
produced
by
bats
under
duress.
Bat
vocalizations
signal
different
degrees
urgency
based
on
their
amplitude
modulation
pattern,
without
large
differences
spectral
structure.
These
make
an
ideal
test
case
exploring
limits
deviance
detection
when
considering
naturalistic
soundscapes
with
low
stimulus
contrast.
results
show
limited
evidence
stimulus-specific
sound
sequences
majority
neurons
studied.
Many
did
prominent
effect
related
context-dependent
changes,
caused
that
occurred
most
frequently
within
each
oddball
sequence.
Context-dependent
responses
were
strongest
neurons.
Decoding
analysis
showed
existence
populations
both
cortices,
which
could
distinguish
between
deviants
standards
occurring
same
sequence,
changes
evoked
spike
counts.
Taken
together,
our
highlight
diversity
mechanisms
complementing
classical
encoding
do
not
differ
markedly
composition.
Frontiers in Neuroscience,
Journal Year:
2025,
Volume and Issue:
19
Published: April 9, 2025
This
study
aims
to
explore
the
effects
of
sleep
deprivation
on
cognitive
function
in
healthy
adults,
using
auditory
P300
event-related
potentials
and
subjective
reaction
time
as
key
assessment
metrics.
High-density
electroencephalography
(EEG)
oddball
paradigm
were
utilized
collect
(ERPs)
before
after
intervention,
with
a
record
time.
Participants
classified
into
acute
group
chronic
based
duration
their
night
shift
history.
Following
deprivation,
significant
prolongation
latency
was
observed
among
26
subjects
(P
<
0.05).
Specifically,
increased
significantly
by
83.69
ms
In
contrast,
exhibited
only
minor
increase
6.54
Furthermore,
interaction
effect
between
history
condition
identified
[F
(aXb)
=
4.736,
P
0.040,
η
p
2
0.165],
suggesting
that
influence
varies
groups.
Sleep
induces
impairment,
experiencing
more
severe
deficits.
demonstrated
milder
but
impairment.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 19, 2024
Abstract
The
Inferior
Colliculus
(IC)
has
traditionally
been
regarded
as
an
important
relay
in
the
auditory
pathway,
primarily
involved
relaying
information
from
brainstem
to
thalamus.
However,
this
study
uncovers
multifaceted
role
of
IC
bridging
processing,
sensory
prediction,
and
reward
prediction.
Through
extracellular
recordings
monkeys
engaged
a
sound
duration-based
deviation
detection
task,
we
observed
“climbing
effect”
neuronal
firing
rates,
indicative
enhanced
response
over
sequences
linked
prediction
rather
than
anticipation.
Moreover,
our
findings
demonstrate
errors
within
IC,
highlighting
its
complex
integration
processing.
Further
analysis
revealed
direct
correlation
between
activity
behavioral
choices,
suggesting
involvement
decision-making
processes.
This
research
highlights
more
for
understood,
showcasing
integral
cognitive
processing
emphasizing
importance
integrated
brain
functions.
The
Inferior
Colliculus
(IC)
has
traditionally
been
regarded
as
an
important
relay
in
the
auditory
pathway,
primarily
involved
relaying
information
from
brainstem
to
thalamus.
However,
this
study
uncovers
multifaceted
role
of
IC
bridging
processing,
sensory
prediction,
and
reward
prediction.
Through
extracellular
recordings
monkeys
engaged
a
sound
duration-based
novelty
detection
task,
we
observed
"climbing
effect"
neuronal
firing
rates,
indicative
enhanced
response
over
sequences
linked
prediction
rather
than
anticipation.
Further
exploration
revealed
direct
correlation
between
activity
behavioral
choices,
suggesting
its
involvement
decision-making
processes.
Additionally,
our
findings
demonstrate
errors
within
IC,
highlighting
complex
integration
processing.
This
research
challenges
conventional
views
showcasing
integral
cognitive
processing
emphasizing
importance
integrated
brain
functions.
The
inferior
colliculus
(IC)
has
traditionally
been
regarded
as
an
important
relay
in
the
auditory
pathway,
primarily
involved
relaying
information
from
brainstem
to
thalamus.
However,
this
study
uncovers
multifaceted
role
of
IC
bridging
processing,
sensory
prediction,
and
reward
prediction.
Through
extracellular
recordings
monkeys
engaged
a
sound
duration-based
deviation
detection
task,
we
observed
'climbing
effect'
neuronal
firing
rates,
indicative
enhanced
response
over
sequences
linked
prediction
rather
than
anticipation.
Moreover,
our
findings
demonstrate
errors
within
IC,
highlighting
its
complex
integration
processing.
Further
analysis
revealed
direct
correlation
between
activity
behavioral
choices,
suggesting
involvement
decision-making
processes.
This
research
highlights
more
for
understood,
showcasing
integral
cognitive
processing
emphasizing
importance
integrated
brain
functions.