Real-world objects scaffold visual working memory for features: Increased neural delay activity when colors are remembered as part of meaningful objects
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 20, 2025
Abstract
Visual
working
memory
is
a
core
cognitive
function
that
allows
active
storage
of
task-relevant
visual
information.
While
previous
studies
have
postulated
the
capacity
this
system
fixed
with
respect
to
single
feature
dimension,
recent
research
has
shown
performance
for
simple
–
color
improved
when
encoded
as
part
real-world
object
relative
an
unrecognizable
scrambled
shape.
Using
EEG
(N
=
24),
we
here
demonstrate
increase
supported
by
enhanced
neural
delay
activity
during
retention
period
(indexed
contralateral-delay-activity
eventrelated
potential),
suggesting
behavioral
benefit
linked
maintenance
process
memory.
Furthermore,
using
time-resolved
similarity
measures,
show
not
only
increased
delay,
but
also
more
stable
over
time
colors
are
remembered
objects.
Finally,
report
novel
frontocentral
event-related
potential
distinguishes
between
objects
and
encoding
processes.
Overall,
our
results
features
can
expand
depending
on
what
context
these
in.
Язык: Английский
Predictable object motion is extrapolated to support visual working memory for surface features
Cognition,
Год журнала:
2025,
Номер
261, С. 106150 - 106150
Опубликована: Апрель 29, 2025
Space
and
time
support
visual
working
memory
(VWM)
by
providing
incidental
reference
frames
for
task-relevant
information.
While
this
has
been
studied
with
stationary
items,
natural
scenes
also
contain
moving
objects,
whose
positions
change
over
time,
often
in
a
predictable
manner.
We
investigated
if
item
motion
is
leveraged
to
facilitate
VWM
surface
features.
In
dynamic
change-detection
task,
participants
memorised
the
colours
of
three
disks
at
constant
speed
different
directions
before
disappearing.
After
retention
interval,
reappeared
(a)
movement
endpoint
locations
where
they
had
disappeared
(b)
spatiotemporally
congruent
their
previous
(where
would
have
continued
movement),
(c)
temporal
offset
(consistent
while
out
view)
or
(d)
spatial
direction).
Performance
decreased
increasing
offsets
relative
positions,
indicating
that
items'
were
remapped
anticipated
future
locations.
This
updating
spatiotemporal
frames,
however,
only
occurs
extrapolation
allows
reliable
predictions
occluded
items
will
reappear.
task
context
unreliable
patterns,
congruency
effect
diminished
performance
instead
increased
endpoints.
A
second
experiment
confirmed
influence
reliability.
Thus,
extrapolated
update
VWM,
supporting
features
thereby
contributing
visually
guided
behavior
environments.
Язык: Английский
The benefit of removing information from working memory: Increasing available cognitive resources or reducing interference?
Cognition,
Год журнала:
2025,
Номер
260, С. 106134 - 106134
Опубликована: Апрель 6, 2025
Removing
information
from
working
memory
is
thought
to
free
up
capacity
and
improve
the
retention
of
other
information.
However,
whether
this
benefit
arises
reducing
interference
to-be-forgotten
or
freeing
cognitive
resources
remains
unclear.
We
examined
by
comparing
removal
immediately
following
encoding
an
item
(immediate
removal),
delayed
until
after
items
have
been
encoded
(delayed
removal).
Interference
theories
predict
that
both
types
should
reduce
performance.
In
contrast,
if
frees
resources,
beneficial
effect
on
be
greater
earlier
it
occurs,
as
can
then
allocated
subsequently
items.
Experiment
1
showed
immediate
failed
but
improved
for
item-location
bindings
still
maintained
in
memory.
2,
only
facilitated
afterward.
These
results
suggest
increasing
available
rather
than
interference.
Язык: Английский