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  Flexible head-casts for high spatial precision MEG

Meyer, S. S., Bonaiuto, J., Lim, M., Rossiter, H., Waters, S., Bradbury, D., et al. (2017). Flexible head-casts for high spatial precision MEG. Journal of Neuroscience Methods, 276, 38-45. doi:10.1016/j.jneumeth.2016.11.009.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-002C-C849-C Versions-Permalink: https://hdl.handle.net/21.11116/0000-0005-4D6D-C
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 Urheber:
Meyer, Sofie S.1, Autor
Bonaiuto, James2, Autor
Lim, Mark3, Autor
Rossiter, Holly1, Autor
Waters, Sheena2, Autor
Bradbury, David1, Autor
Bestmann, Sven2, Autor
Brookes, Matthew4, Autor
Callaghan, Martina F.1, Autor
Weiskopf, Nikolaus1, 5, Autor           
Barnes , Gareth R.1, Autor
Affiliations:
1Wellcome Trust Centre for Neuroimaging, University College London, United Kingdom, ou_persistent22              
2Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, United Kingdom, ou_persistent22              
3Chalk Studios Ltd, London, United Kingdom, ou_persistent22              
4Sir Peter Mansfield Magnetic Resonance Centre, University of Nottingham, United Kingdom, ou_persistent22              
5Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_2205649              

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Schlagwörter: Magnetoencephalography; Head localization; Spatial resolution; MRI-MEG Co-registration; Head movement minimization; Head-cast; 3D printing
 Zusammenfassung: Background

In combination with magnetoencephalographic (MEG) data, accurate knowledge of the brain’s structure and location provide a principled way of reconstructing neural activity with high temporal resolution. However, measuring the brain’s location is compromised by head movement during scanning, and by fiducial-based co-registration with magnetic resonance imaging (MRI) data. The uncertainty from these two factors introduces errors into the forward model and limit the spatial resolution of the data.
New method

We present a method for stabilizing and reliably repositioning the head during scanning, and for co-registering MRI and MEG data with low error.
Results

Using this new flexible and comfortable subject-specific head-cast prototype, we find within-session movements of <0.25 mm and between-session repositioning errors around 1 mm.
Comparison with existing method(s)

This method is an improvement over existing methods for stabilizing the head or correcting for location shifts on- or off-line, which still introduce approximately 5 mm of uncertainty at best (Adjamian et al., 2004; Stolk et al., 2013; Whalen et al., 2008). Further, the head-cast design presented here is more comfortable, safer, and easier to use than the earlier 3D printed prototype, and give slightly lower co-registration errors (Troebinger et al., 2014b).
Conclusions

We provide an empirical example of how these head-casts impact on source level reproducibility. Employment of the individual flexible head-casts for MEG recordings provide a reliable method of safely stabilizing the head during MEG recordings, and for co-registering MRI anatomical images to MEG functional data.

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Sprache(n): eng - English
 Datum: 2016-11-182016-09-212016-11-202016-11-222017-01-30
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1016/j.jneumeth.2016.11.009
PMID: 27887969
PMC: PMC5260820
Anderer: Epub 2016
 Art des Abschluß: -

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Projektinformation

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Projektname : Non-invasive in vivo histology in health and disease using Magnetic Resonance Imaging (MRI) / HMRI
Grant ID : 616905
Förderprogramm : Funding Programme 7
Förderorganisation : European Commission (EC)
Projektname : Building multi-site clinical research capacity in Magnetoencephalography (MEG)
Grant ID : MR/K005464/1
Förderprogramm : -
Förderorganisation : Medical Research Council (MRC)
Projektname : Non-invasive laminar electrophysiology in humans
Grant ID : BB/M009645/1
Förderprogramm : -
Förderorganisation : Biotechnology and Biological Sciences Research Council (BBSRC)
Projektname : -
Grant ID : 091593/Z/10/Z
Förderprogramm : -
Förderorganisation : Wellcome Trust
Projektname : -
Grant ID : MR/K6010/86010/1 ; MR/M006301/1
Förderprogramm : Medical Research Council and Engineering and Physical Sciences Research Council Grant
Förderorganisation : Medical Research Council (MRC)

Quelle 1

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Titel: Journal of Neuroscience Methods
  Andere : J. Neurosci. Meth.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Amsterdam : Elsevier
Seiten: - Band / Heft: 276 Artikelnummer: - Start- / Endseite: 38 - 45 Identifikator: ISSN: 0165-0270
CoNE: https://pure.mpg.de/cone/journals/resource/954925480594