A Novel, Robust, and Portable Platform for Magnetoencephalography using Optically Pumped Magnetometers
Imaging Neuroscience,
Год журнала:
2024,
Номер
2, С. 1 - 22
Опубликована: Янв. 1, 2024
Abstract
Magnetoencephalography
(MEG)
measures
brain
function
via
assessment
of
magnetic
fields
generated
by
neural
currents.
Conventional
MEG
uses
superconducting
sensors,
which
place
significant
limitations
on
performance,
practicality,
and
deployment;
however,
the
field
has
been
revolutionised
in
recent
years
introduction
optically-pumped
magnetometers
(OPMs).
OPMs
enable
measurement
signal
without
cryogenics,
consequently
conception
“OPM-MEG”
systems
ostensibly
allow
increased
sensitivity
resolution,
lifespan
compliance,
free
subject
movement,
lower
cost.
However,
OPM-MEG
is
its
infancy
with
existing
both
sensor
system
design.
Here,
we
report
a
new
design
miniaturised
integrated
electronic
control,
high
level
portability,
improved
dynamic
range.
We
show
that
this
produces
equivalent
compared
an
established
instrument;
specifically,
when
measuring
task-induced
beta-band,
gamma-band,
evoked
neuro-electrical
responses,
source
localisations
from
two
were
comparable
temporal
correlation
measured
responses
was
>0.7
at
individual
>0.9
for
groups.
Using
electromagnetic
phantom,
demonstrate
range
running
background
up
to
8
nT.
effective
gathering
data
during
movement
(including
sitting-to-standing
paradigm)
it
compatible
simultaneous
electroencephalography
(EEG).
Finally,
portability
moving
between
laboratories.
Overall,
our
shown
be
step
forward
offers
attractive
platform
next
generation
functional
medical
imaging.
Язык: Английский
Anatomically Veridical On‐Scalp Sensor Topographies
European Journal of Neuroscience,
Год журнала:
2025,
Номер
61(5)
Опубликована: Март 1, 2025
ABSTRACT
When
working
with
sensor‐level
data
recorded
using
on‐scalp
neuroimaging
methods
such
as
electroencephalography
(EEG),
it
is
common
practice
to
use
two‐dimensional
(2D)
representations
of
sensor
positions
aid
interpretation.
Positioning
sensors
relative
anatomy,
in
the
classic
10–20
system
EEG
electrode
placement,
enables
2D
topographies
that
are
familiar
many
researchers
and
clinicians.
However,
when
another
increasingly
popular
method,
optically
pumped
magnetometer–based
magnetoencephalography
(OP‐MEG),
bespoke
arrays
much
more
common,
these
not
prepared
according
any
standard
principle.
Consequently,
polar
projection
often
used
produce
individual
directly
related
anatomy
cannot
be
averaged
across
people
simply.
Given
current
proliferation
OP‐MEG
facilities
globally,
this
issue
will
become
an
increasing
hindrance
visualising
data,
particularly
for
group
studies.
To
address
problem,
we
adapted
extended
build
a
flexible,
anatomical
method
applied
digitised
head
shape,
fiducials
positions.
We
demonstrate
maintains
spatially
veridical
individuals
improving
on
projections
at
varying
OPM
array
densities.
By
applying
our
benefits
anatomically
can
now
enjoyed
those
from
OP‐MEG,
regardless
variation
placement
sparse
or
focal
arrays.
Язык: Английский
Paradigms and methods of noninvasive brain-computer interfaces in motor or communication assistance and rehabilitation: a systematic review
Medical & Biological Engineering & Computing,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 10, 2025
Язык: Английский
Facilitating cognitive neuroscience research with 80-sensor optically pumped magnetometer magnetoencephalography (OPM-MEG)
NeuroImage,
Год журнала:
2025,
Номер
311, С. 121182 - 121182
Опубликована: Апрель 3, 2025
Язык: Английский
The development of aperiodic and periodic resting-state power between early childhood and adulthood: New insights from optically pumped magnetometers
Developmental Cognitive Neuroscience,
Год журнала:
2024,
Номер
69, С. 101433 - 101433
Опубликована: Авг. 10, 2024
Neurophysiological
signals,
comprised
of
both
periodic
(e.g.,
oscillatory)
and
aperiodic
non-oscillatory)
activity,
undergo
complex
developmental
changes
between
childhood
adulthood.
With
much
the
existing
literature
primarily
focused
on
features
brain
function,
our
understanding
signals
is
still
in
its
infancy.
Here,
we
are
first
to
examine
age-related
(peak
frequency
power)
(slope
offset)
activity
using
optically
pumped
magnetometers
(OPMs),
a
new,
wearable
magnetoencephalography
(MEG)
technology
that
particularly
well-suited
for
studying
development.
We
examined
these
spectral
sample
(N=65)
toddlers
(1-3
years),
children
(4-5
young
adults
(20-26
(27-38
years).
Consistent
with
extant
literature,
found
significant
decreases
slope
offset,
peak
power
were
frequency-specific;
show
effect
sizes
also
varied
across
regions.
This
work
not
only
adds
growing
body
highlighting
advantages
OPMs,
especially
development,
but
contributes
novel
information
regarding
variation
neurophysiological
age
brain.
Язык: Английский