Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interference suppression techniques for OPM-based MEG: Opportunities and
  challenges   One of the primary technical challenges facing magnetoencephalography (MEG)
is that the magnitude of neuromagnetic fields is several orders of magnitude
lower than interfering signals. Recently, a new type of sensor has been
developed - the optically pumped magnetometer (OPM). These sensors can be
placed directly on the scalp and move with the head during participant
movement, making them wearable. This opens up a range of exciting experimental
and clinical opportunities for OPM-based MEG experiments, including paediatric
studies, and the incorporation of naturalistic movements into neuroimaging
paradigms. However, OPMs face some unique challenges in terms of interference
suppression, especially in situations involving mobile participants, and when
OPMs are integrated with electrical equipment required for naturalistic
paradigms, such as motion capture systems. Here we briefly review various
hardware solutions for OPM interference suppression. We then outline several
signal processing strategies aimed at increasing the signal from neuromagnetic
sources. These include regression-based strategies, temporal filtering and
spatial filtering approaches. The focus is on the practical application of
these signal processing algorithms to OPM data. In a similar vein, we include
two worked-through experiments using OPM data collected from a whole-head
sensor array. These tutorial-style examples illustrate how the steps for
suppressing external interference can be implemented, including the associated
data and code so that researchers can try the pipelines for themselves. With
the popularity of OPM-based MEG rising, there will be an increasing need to
deal with interference suppression. We hope this practical paper provides a
resource for OPM-based MEG researchers to build upon.

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The categories of this paper are: econ
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
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The categories of this paper are: math
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: chao-dyn
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat