Open Mind,
Journal Year:
2024,
Volume and Issue:
8, P. 1348 - 1368
Published: Jan. 1, 2024
Memory
systems
constantly
confront
the
challenge
of
capturing
both
shared
features
that
connect
experiences
together
and
unique
distinguish
them.
Across
two
experiments,
we
leveraged
a
color
memory
distortion
paradigm
to
investigate
how
handle
this
representational
tension
when
learning
new
information.
Over
thirty-minute
period,
participants
learned
categories
novel
objects,
where
each
feature
was
assigned
particular
color.
While
did
not
differ
in
accurately
they
remembered
these
overall,
inaccurate,
misremembered
(relative
unique)
as
more
similar
category's
average
color,
suggesting
integration
memory.
This
same
rapid
warping
manifested
neural
network
model
trained
on
categories.
The
work
reveals
memories
for
different
are
rapidly
differentially
warped
function
their
roles
category.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 28, 2024
Experiences
shape
preferences.
This
is
particularly
the
case
when
they
deviate
from
our
expectations
and
thus
elicit
prediction
errors.
Here
we
show
that
errors
do
not
only
occur
in
response
to
actual
events
–
also
arise
endogenously
merely
imagined
events.
Specifically,
people
acquire
a
preference
for
acquaintances
as
imagine
interacting
with
them
unexpectedly
pleasant
situations.
learning
can
best
be
accounted
by
computational
model
calculates
based
on
these
rewarding
experiences.
Using
functional
MRI,
error
mediated
via
striatal
activity.
activity,
turn,
seems
update
preferences
about
individuals
updating
their
cortical
representations.
Our
findings
demonstrate
imaginings
violate
own
drive
endogenous
coopting
neural
system
implements
reinforcement
learning.
They
reveal
fundamental
principles
how
knowledge
devoid
of
Neurobiology of Aging,
Journal Year:
2024,
Volume and Issue:
147, P. 32 - 48
Published: Dec. 5, 2024
Does
precision
in
auditory
perception
predict
subsequent
memory
(i.e.,
mnemonic
discrimination)
aging?
This
study
examined
if
the
mismatch
negativity
(MMN),
an
electrophysiological
marker
of
change
detection
and
encoding,
relates
to
age
differences
discrimination.
The
MMN
was
recorded
92
adults
(18-86
years,
47
females)
a
passive
oddball
paradigm
using
tone
sequences.
Participants
then
completed
surprise
recognition
test
for
presented
sequences
old
targets)
against
novel
similar
lures
dissimilar
foils).
Across
adult
lifespan,
amplitudes
showed
attenuation
with
increasing
age,
accompanied
by
worse
performance
discriminating
targets
from
foils.
participants,
smaller
amplitude
predicted
performance.
Notably,
partially
explained
age-related
declines
target-lure
discriminability,
but
not
target-foil
discriminability.
Findings
reinforce
as
discrimination,
clarify
how
at
retrieval
may
be
encoding.
Open Mind,
Journal Year:
2024,
Volume and Issue:
8, P. 1348 - 1368
Published: Jan. 1, 2024
Memory
systems
constantly
confront
the
challenge
of
capturing
both
shared
features
that
connect
experiences
together
and
unique
distinguish
them.
Across
two
experiments,
we
leveraged
a
color
memory
distortion
paradigm
to
investigate
how
handle
this
representational
tension
when
learning
new
information.
Over
thirty-minute
period,
participants
learned
categories
novel
objects,
where
each
feature
was
assigned
particular
color.
While
did
not
differ
in
accurately
they
remembered
these
overall,
inaccurate,
misremembered
(relative
unique)
as
more
similar
category's
average
color,
suggesting
integration
memory.
This
same
rapid
warping
manifested
neural
network
model
trained
on
categories.
The
work
reveals
memories
for
different
are
rapidly
differentially
warped
function
their
roles
category.
