Flexible
updating
of
information
in
Visual
Working
Memory
(VWM)
is
crucial
to
deal
with
its
limited
capacity.
Previous
research
has
shown
that
the
removal
no
longer
relevant
takes
some
time
complete.
Here,
we
sought
study
course
such
by
tracking
accompanying
drop
load
through
behavioral
and
neurophysiological
measures.
In
a
first
experimental
session,
participants
completed
visuospatial
retro-cue
task
which
Cue-Target
Interval
(CTI)
was
manipulated.
Performance
revealed
it
about
half
second
make
full
use
retro-cue.
dynamics
load-related
electroencephalographic
(EEG)
signals
track
information.
We
applied
Multivariate
Pattern
Analysis
(MVPA)
EEG
data
from
same
task.
However,
contrary
previous
indicating
MVPA
can
be
used
uniquely
decode
VWM
load,
results
suggested
classifiers
were
mainly
sensitive
selection,
visual
cue
variations,
or
eye
movements
accompany
manipulations,
not
so
much
per
se.
These
findings
advise
caution
when
using
as
may
confounding
operations.
Journal of Cognitive Neuroscience,
Год журнала:
2022,
Номер
35(1), С. 17 - 23
Опубликована: Ноя. 2, 2022
Abstract
Working
memory
is
where
thoughts
are
held
and
manipulated.
For
many
years,
the
dominant
model
was
that
working
relied
on
steady-state
neural
dynamics.
A
representation
activated
then
in
state.
However,
as
often
happens,
more
we
examine
(especially
with
new
technology),
complex
it
looks.
Recent
discoveries
show
involves
multiple
mechanisms,
including
discontinuous
bouts
of
spiking.
Memories
also
dynamic,
evolving
a
task-dependent
manner.
Cortical
rhythms
may
control
those
dynamics,
thereby
endowing
top–down
“executive”
over
our
thoughts.
Current Opinion in Behavioral Sciences,
Год журнала:
2024,
Номер
57, С. 101384 - 101384
Опубликована: Апрель 10, 2024
Our
ability
to
overcome
habitual
responses
in
favor
of
goal-driven
novel
depends
on
frontoparietal
cognitive
control
networks
(CCNs).
Recent
and
ongoing
work
is
revealing
the
brain
network
information
processes
that
allow
CCNs
generate
flexibility.
First,
working
memory
necessary
for
flexible
maintenance
manipulation
goal-relevant
representations
were
recently
found
depend
short-term
plasticity
(in
contrast
persistent
activity)
within
CCN
regions.
Second,
compositional
(i.e.
abstract
reusable)
rule
maintained
have
been
reroute
activity
flows
from
stimulus
response,
enabling
behavior.
Together,
these
findings
suggest
flexibility
enhanced
by
CCN-coordinated
mechanisms,
utilizing
reuse
neural
flexibly
accomplish
task
goals.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 12, 2024
A
bstract
People
effortlessly
remember
short,
but
otherwise
arbitrary,
sequences
of
familiar
stimuli
over
a
brief
period
time.
This
deceptively
mundane
ability
is
core
for
purposeful
behavior
and
cognition.
Surprisingly,
however,
it
remains
largely
unexplained.
Here,
we
propose
that
both
the
their
order
occurrence
are
encoded
by
transient
synaptic
enhancement
multiple
time
scales.
To
substantiate
this
proposal,
extend
our
previously-proposed
theory
Working
Memory
(WM)
to
include
augmentation
besides
short-term
depression
facilitation,
consistently
with
experimental
observations.
Like
builds
up
repetitive
activation
persists
much
longer.
We
find
long
scales
associated
naturally
lead
emergence
“primacy
gradient”
in
efficacies
can
be
used
reconstruct
presentation
at
recall.
The
novel
accounts
prominent
features
humans
recalling
lists
items,
makes
testable
predictions
and,
intriguingly,
suggests
WM
capacity
limitations
result
from
failure
retrieving,
rather
than
storing,
information.
Taken
together,
results
advance
understanding
neuronal
mechanisms
underpinning
encoding
serial
offer
insights
into
origin
capacity.
Neuroscience & Biobehavioral Reviews,
Год журнала:
2024,
Номер
163, С. 105742 - 105742
Опубликована: Июнь 1, 2024
The
causes
of
forgetting
in
working
memory
(WM)
remain
a
source
debate
cognitive
psychology,
partly
because
it
has
always
been
challenging
to
probe
the
complex
neural
mechanisms
that
govern
rapid
processes
humans.
In
this
review,
we
argue
neural,
and
more
precisely
animal
models,
provide
valuable
tools
for
exploring
precise
WM
forgetting.
First,
discuss
theoretical
perspectives
concerning
Then,
present
neuronal
correlates
animals,
starting
from
initial
evidence
delay
activity
observed
prefrontal
cortex
later
synaptic
theory
WM.
third
part,
specific
theories
are
discussed,
including
notion
silent
versus
non-silent
is
consistent
with
refreshing
decay
proposed
human
models.
review
concludes
an
exploration
relationship
between
long-term
WM,
revealing
connections
these
two
forms
through
hypothesis,
which
suggests
storage
interference
can
potentially
disrupt
Current Research in Behavioral Sciences,
Год журнала:
2023,
Номер
6, С. 100145 - 100145
Опубликована: Дек. 28, 2023
We
perceive
the
world
in
a
continuum
but
remember
our
past
as
discrete
episodic
events.
Dominant
models
of
event
segmentation
suggest
that
prediction
errors
or
contextual
changes
are
driving
factors
parse
continuous
experiences
into
segmented
These
propose
working
memory
to
hold
critical
role
segmentation,
yet
particular
functioning
underlies
memories
remains
unclear.
Here,
we
first
review
literature
regarding
result
memories.
Next,
discuss
under
two
possible
how
it
represents
information
within
each
event.
Lastly,
summarize
hippocampus
segmenting
and
integrating
Clarifying
contributions
is
important
improve
understanding
structure
Journal of Cognition,
Год журнала:
2023,
Номер
6(1)
Опубликована: Янв. 1, 2023
Both
the
experimental
and
psychometric
investigation
of
WM
capacity
limit
depend
critically
on
assumption
that
performance
in
our
tests
reflects
to
a
good
approximation.
Most
tasks
measure
rely
testing
memory
after
short
time
during
which
participants
are
asked
maintain
information
WM.
In
these
tests,
episodic
long-term
is
likely
also
lay
down
trace
set.
Therefore,
can
draw
two
sources
when
tested,
making
it
difficult
separate
contributions
LTM
immediate-memory
tests.
Here
we
use
proactive
interference
distinguish
between
remembered
information,
building
fact
vulnerable
interference,
whereas
protected
against
it.
We
release-from-PI
paradigm
determine
extent
commonly
used
reflect
from
LTM.
focus
for
serial
order
verbal
lists,
but
include
visual
spatial
tasks.
The
results
five
experiments
demonstrate
although
some
investigate
heavily
contaminated
by
LTM,
other
popular
paradigms
such
as
probed
recall,
standard
version
continuous
color-reproduction
task,
not.
Measuring
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