Prediction error and event segmentation in episodic memory
Neuroscience & Biobehavioral Reviews,
Год журнала:
2024,
Номер
157, С. 105533 - 105533
Опубликована: Янв. 4, 2024
Язык: Английский
Generating event boundaries in memory without prediction error
Опубликована: Июнь 13, 2024
Continuous
experiences
are
segmented
into
discrete
long-term
memories
through
the
generation
of
event
boundaries.
A
leading
theory
segmentation
proposes
that
boundaries
triggered
by
prediction
errors
caused
unexpected
stimuli.
However,
recent
studies
have
raised
doubts
about
whether
error
is
necessary
for
segmentation.
In
this
study,
we
tested
an
alternative
account:
in
memory
reflect
temporal
structure
working
during
perception
and
can
occur
even
absence
error.
experiment
1,
participants
were
asked
to
detect
repeats
within
sequences
random
images.
The
switch
a
new
sequence
could
be
predictable,
with
continuous
display
number
images
remaining
each
sequence,
or
unpredictable,
no
prior
indication
was
end.
We
found
boundary-related
effects
on
order
both
cases,
higher
accuracy
within-sequence
comparisons
when
boundary
between
predictable.
experiments
2a
2b,
always
performed
either
(event-related)
repeat-detection
task
from
1
(non-event-related)
2-back
task.
observed
event-boundary
only
event-related.
Both
these
support
segmentation,
which
critically
related
dynamics
rather
than
Язык: Английский
Effects of context changes on memory reactivation
Journal of Neuroscience,
Год журнала:
2024,
Номер
44(36), С. e2096232024 - e2096232024
Опубликована: Авг. 5, 2024
While
the
influence
of
context
on
long-term
memory
(LTM)
is
well
documented,
its
effects
interaction
between
working
(WM)
and
LTM
remain
less
understood.
In
this
study,
we
explored
these
interactions
using
a
delayed
match-to-sample
task,
where
participants
(6
males,
16
females)
encountered
same
target
object
across
six
consecutive
trials,
facilitating
transition
from
WM
to
LTM.
During
half
repetitions,
background
color
changed.
We
measured
storage
contralateral
delay
activity
in
electroencephalography.
Our
results
reveal
that
task-irrelevant
changes
trigger
reactivation
memories
WM.
This
may
be
attributed
content–context
binding
hippocampal
pattern
separation.
Язык: Английский
Effects of context changes on memory reactivation
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Март 20, 2024
Abstract
While
the
influence
of
context
on
long-term
memory
(LTM)
is
well-documented,
its
effects
interaction
between
working
(WM)
and
LTM
remain
less
understood.
In
this
study,
we
explored
these
interactions
using
a
delayed
match-to-sample
task,
where
participants
(6
Male,
16
Female)
encountered
same
target
object
across
six
consecutive
trials,
facilitating
transition
from
WM
to
LTM.
During
half
repetitions,
background
color
changed.
We
measured
storage
contralateral
delay
activity
(CDA)
in
electroencephalography
(EEG).
Our
results
reveal
that
task-irrelevant
changes
trigger
reactivation
memories
WM.
This
may
be
attributed
content-context
binding
hippocampal
pattern
separation.
Significance
Statement
Understanding
mechanisms
updating
response
changing
contexts
vital
because
plays
pivotal
role
shaping
memories.
study
demonstrates,
for
first
time,
an
irrelevant
change
triggers
learned
visual
memory.
observation
underscores
importance
multi-memory
during
updating.
Challenging
traditional
models
postulate
mandatory
upon
each
use,
our
instead
selective
process,
especially
transitions
new
environments.
finding
elucidates
adaptive
nature
enhances
understanding
retrieval
processes.
Язык: Английский
Visual event boundaries trigger forgetting despite active maintenance in visual working memory
Journal of Vision,
Год журнала:
2024,
Номер
24(9), С. 9 - 9
Опубликована: Сен. 11, 2024
The
contents
of
visual
perception
are
inherently
dynamic-just
as
we
experience
objects
in
space,
so
too
events
time.
boundaries
between
these
have
downstream
consequences.
For
example,
memory
for
incidentally
encountered
items
is
impaired
when
walking
through
a
doorway,
perhaps
because
event
serve
cues
to
clear
obsolete
information
from
previous
events.
Although
this
kind
"memory
flushing"
can
be
adaptive,
work
on
working
(VWM)
has
focused
the
opposite
function
active
maintenance
face
distraction.
How
do
two
cognitive
operations
interact?
In
study,
observers
watched
animations
which
they
walked
three-dimensionally
rendered
rooms
with
picture
frames
walls.
Within
frames,
either
saw
images
that
had
remember
("encoding")
or
recalled
seen
immediately
preceding
frame
("test").
Half
time,
doorway
was
crossed
during
delay
encoding
and
test.
Across
experiments,
there
consistent
decrement
first
image
encoded
compared
no-doorway
condition
while
equating
time
elapsed,
distance
traveled,
distractibility
doorway.
This
despite
top-down
VWM
efforts
highlights
power
structure
what
forget.
Язык: Английский