Neurobiology of Language,
Journal Year:
2022,
Volume and Issue:
4(1), P. 29 - 52
Published: Oct. 4, 2022
Partial
speech
input
is
often
understood
to
trigger
rapid
and
automatic
activation
of
successively
higher-level
representations
words,
from
sound
meaning.
Here
we
show
evidence
magnetoencephalography
that
this
type
incremental
processing
limited
when
words
are
heard
in
isolation
as
compared
continuous
speech.
This
suggests
a
less
unified
word
recognition
process
than
assumed.
We
present
isolated
neural
effects
phoneme
probability,
quantified
by
surprisal,
significantly
stronger
(statistically
null)
phoneme-by-phoneme
lexical
uncertainty,
cohort
entropy.
In
contrast,
find
robust
both
entropy
surprisal
during
perception
connected
speech,
with
significant
interaction
between
the
contexts.
dissociation
rules
out
models
which
common
indicators
uniform
process,
even
though
these
closely
related
information-theoretic
measures
arise
probability
distribution
wordforms
consistent
input.
propose
reflect
access
lower
level
representation
auditory
(e.g.,
wordforms)
while
occurrence
task
sensitive,
driven
competition
or
engaged
late
(or
not
at
all)
single
words.
Neurobiology of Language,
Journal Year:
2024,
Volume and Issue:
5(4), P. 942 - 980
Published: Jan. 1, 2024
When
we
understand
language,
recognize
words
and
combine
them
into
sentences.
In
this
article,
explore
the
hypothesis
that
listeners
use
probabilistic
information
about
to
build
syntactic
structure.
Recent
work
has
shown
lexical
probability
structure
both
modulate
delta-band
(<4
Hz)
neural
signal.
Here,
investigated
whether
encoding
of
changes
as
a
function
distributional
properties
word.
To
end,
analyzed
MEG
data
24
native
speakers
Dutch
who
listened
three
fairytales
with
total
duration
49
min.
Using
temporal
response
functions
cumulative
model-comparison
approach,
evaluated
contributions
features
variance
in
This
revealed
surprisal
values
(a
feature),
well
bottom-up
node
counts
feature)
positively
contributed
model
Subsequently,
compared
responses
feature
between
high-
low-surprisal
values.
delay
consequence
value
word:
high-surprisal
were
associated
delayed
by
150-190
ms.
The
was
not
affected
word
duration,
did
have
origin.
These
findings
suggest
brain
uses
infer
structure,
highlight
an
importance
for
role
time
process.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Aug. 17, 2024
The
multivariate
temporal
response
function
(mTRF)
is
an
effective
tool
for
investigating
the
neural
encoding
of
acoustic
and
complex
linguistic
features
in
natural
continuous
speech.
In
this
study,
we
investigated
how
representations
speech
derived
from
stimuli
are
related
to
early
signs
cognitive
decline
older
adults,
taking
into
account
effects
hearing.
Participants
without
(
This
paper
describes
the
auditory
EEG
challenge,
organized
as
one
of
Signal
Processing
Grand
Challenges
at
ICASSP
2024.
The
challenge
provides
electroencephalogram
(EEG)
recordings
105
subjects
who
listened
to
continuous
speech,
audiobooks
or
podcasts,
while
their
brain
activity
was
recorded.
consists
two
tasks
that
relate
signals
presented
speech
stimulus.
first
task,
called
match-mismatch,
is
determine
which
five
segments
induced
a
given
segment.
second
regression,
reconstruct
Mel
spectrogram
from
EEG.
85
were
provided
training
set
so
participants
could
train
models
on
relatively
large
dataset.
remaining
20
used
held-out
for
evaluation
step
challenge.
Neurobiology of Language,
Journal Year:
2022,
Volume and Issue:
4(1), P. 29 - 52
Published: Oct. 4, 2022
Partial
speech
input
is
often
understood
to
trigger
rapid
and
automatic
activation
of
successively
higher-level
representations
words,
from
sound
meaning.
Here
we
show
evidence
magnetoencephalography
that
this
type
incremental
processing
limited
when
words
are
heard
in
isolation
as
compared
continuous
speech.
This
suggests
a
less
unified
word
recognition
process
than
assumed.
We
present
isolated
neural
effects
phoneme
probability,
quantified
by
surprisal,
significantly
stronger
(statistically
null)
phoneme-by-phoneme
lexical
uncertainty,
cohort
entropy.
In
contrast,
find
robust
both
entropy
surprisal
during
perception
connected
speech,
with
significant
interaction
between
the
contexts.
dissociation
rules
out
models
which
common
indicators
uniform
process,
even
though
these
closely
related
information-theoretic
measures
arise
probability
distribution
wordforms
consistent
input.
propose
reflect
access
lower
level
representation
auditory
(e.g.,
wordforms)
while
occurrence
task
sensitive,
driven
competition
or
engaged
late
(or
not
at
all)
single
words.