Visual mental imagery in typical imagers and in aphantasia: A millimeter-scale 7-T fMRI study
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: June 14, 2023
Abstract
Most
of
us
effortlessly
describe
visual
objects,
whether
seen
or
remembered.
Yet,
around
4%
people
report
congenital
aphantasia:
they
struggle
to
visualize
objects
despite
being
able
their
appearance.
What
neural
mechanisms
create
this
disparity
between
subjective
experience
and
objective
performance?
Aphantasia
can
provide
novel
insights
into
conscious
processing
awareness.
We
used
ultra-high
field
7T
fMRI
establish
the
circuits
involved
in
mental
imagery
perception,
elucidate
associated
with
internally
generated
information
absence
aphantasia.
Ten
typical
imagers
10
aphantasic
individuals
performed
perceptual
tasks
five
domains:
object
shape,
color,
written
words,
faces,
spatial
relationships.
In
imagers,
activated
left-hemisphere
frontoparietal
areas,
relevant
domain-preferring
areas
ventral
temporal
cortex
partly
overlapping
a
domain-general
area
left
fusiform
gyrus
(the
Fusiform
Imagery
Node).
The
results
were
valid
for
each
individual
participant.
individuals,
similar
but
there
was
reduced
functional
connectivity
Node
areas.
Our
unveil
domain-specific
imagery,
disorganization
aphantasia,
support
general
hypothesis
that
-
perceived
imagined
depends
on
integrated
activity
high-level
networks.
Language: Английский
Complex phonological tasks predict reading in 7 to 11 years of age typically developing Russian children
Journal of Research in Reading,
Journal Year:
2020,
Volume and Issue:
43(4), P. 516 - 535
Published: Sept. 6, 2020
Background
The
important
role
of
phonological
processing
for
reading
has
been
demonstrated
by
many
studies.
purpose
this
research
was
to
investigate
the
in
Russian.
Specifically,
we
tested
whether
overall
complexity
a
task
predicts
fluency
and
comprehension.
Method
We
used
seven
tests
ranked
according
number
linguistic
processes
involved
each
task.
examined
relative
difficulty
relationship
between
skills
(reading
comprehension
simpler
more
difficult
texts)
90
typically
developing
7
11
years‐of‐age
Russian‐speaking
children.
Results
Phonological
that
had
lower
response
accuracies.
At
individual
level,
greater
estimated
cost
adding
process
test
associated
with
reliable
decrease
but
not
Conclusions
Our
findings
confirmed
substantial
acquisition
while
stressing
higher
predictive
value
complex
fluency.
comprehension,
Russian,
needs
further
investigations.
Language: Английский
The ages of zone of proximal development for retrospective time assessment and anticipation of time event
Applied Neuropsychology Child,
Journal Year:
2021,
Volume and Issue:
11(4), P. 761 - 770
Published: Sept. 24, 2021
From
childhood
to
adulthood,
an
individual's
ability
estimate
and
anticipate
the
timing
of
events
changes
continuously.
This
study
investigated
287
children
aged
5-14
years
duration
prior
future
for
determination
age
at
which
improve
their
skills.
The
Luria
neuropsychological
assessment
battery
Wechsler
Intelligence
Scale
Children
(WISC-IV)
were
applied
find
correlations
between
skills
development
cognitive
functions.
findings
demonstrated
that
retrospective
estimation
has
a
zone
proximal
in
ages
six
eight;
these
children,
accuracy
time
significantly
improved
after
receiving
prompt.
However,
improvement
was
lower
those
who
achieved
results
attention
memory
tests
reduced
spatial
verbal
reasoning
nine
eleven
years.
anticipation
negatively
correlated
with
number
mistakes
made
during
dynamic
praxis
test.
Language: Английский
