Adapted cabling of an EEG cap improves simultaneous measurement of EEG and fMRI at 7T

Matthias C. Meyer, René Scheeringa*, Andrew G. Webb, Natalia Petridou, Oliver Kraff, David G. Norris

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

6 Downloads (Pure)

Abstract

Background: The combination of EEG and ultra-high-field (7 T and above) fMRI holds the promise to relate electrophysiology and hemodynamics with greater signal to noise level and at higher spatial resolutions than conventional field strengths. Technical and safety restrictions have so far resulted in compromises in terms of MRI coil selection, resulting in reduced, signal quality, spatial coverage and resolution in EEG-fMRI studies at 7 T. New method: We adapted a 64-channel MRI-compatible EEG cap so that it could be used with a closed 32-channel MRI head coil thus avoiding several of these compromises. We compare functional and anatomical as well as the EEG quality recorded with this adapted setup with those recorded with a setup that uses an open-ended 8-channel head-coil. Results: Our set-up with the adapted EEG cap inside the closed 32 channel coil resulted in the recording of good quality EEG and (f)MRI data. Both functional and anatomical MRI images show no major effects of the adapted EEG cap on MR signal quality. We demonstrate the ability to compute ERPs and changes in alpha and gamma oscillations from the recorded EEG data. Comparison with existing methods: Compared to MRI recordings with an 8-channel open-ended head-coil, the loss in signal quality of the MRI images related to the adapted EEG cap is considerably reduced. Conclusions: The adaptation of the EEG cap permits the simultaneous recording of good quality whole brain (f)MRI data using a 32 channel receiver coil, while maintaining the quality of the EEG data.

Original languageEnglish
Article number108518
JournalJournal of neuroscience methods
Volume331
DOIs
Publication statusPublished - 1 Feb 2020
Externally publishedYes

Fingerprint

Electroencephalography
Magnetic Resonance Imaging
Head
Electrophysiology
Noise
Hemodynamics
Safety
Brain

Keywords

  • UT-Hybrid-D
  • EEG
  • EEG cap
  • ERP
  • fMRI
  • Oscillations
  • 7T

Cite this

Meyer, Matthias C. ; Scheeringa, René ; Webb, Andrew G. ; Petridou, Natalia ; Kraff, Oliver ; Norris, David G. / Adapted cabling of an EEG cap improves simultaneous measurement of EEG and fMRI at 7T. In: Journal of neuroscience methods. 2020 ; Vol. 331.
@article{e40f51be1a474319afc66ded7ead9e5d,
title = "Adapted cabling of an EEG cap improves simultaneous measurement of EEG and fMRI at 7T",
abstract = "Background: The combination of EEG and ultra-high-field (7 T and above) fMRI holds the promise to relate electrophysiology and hemodynamics with greater signal to noise level and at higher spatial resolutions than conventional field strengths. Technical and safety restrictions have so far resulted in compromises in terms of MRI coil selection, resulting in reduced, signal quality, spatial coverage and resolution in EEG-fMRI studies at 7 T. New method: We adapted a 64-channel MRI-compatible EEG cap so that it could be used with a closed 32-channel MRI head coil thus avoiding several of these compromises. We compare functional and anatomical as well as the EEG quality recorded with this adapted setup with those recorded with a setup that uses an open-ended 8-channel head-coil. Results: Our set-up with the adapted EEG cap inside the closed 32 channel coil resulted in the recording of good quality EEG and (f)MRI data. Both functional and anatomical MRI images show no major effects of the adapted EEG cap on MR signal quality. We demonstrate the ability to compute ERPs and changes in alpha and gamma oscillations from the recorded EEG data. Comparison with existing methods: Compared to MRI recordings with an 8-channel open-ended head-coil, the loss in signal quality of the MRI images related to the adapted EEG cap is considerably reduced. Conclusions: The adaptation of the EEG cap permits the simultaneous recording of good quality whole brain (f)MRI data using a 32 channel receiver coil, while maintaining the quality of the EEG data.",
keywords = "UT-Hybrid-D, EEG, EEG cap, ERP, fMRI, Oscillations, 7T",
author = "Meyer, {Matthias C.} and Ren{\'e} Scheeringa and Webb, {Andrew G.} and Natalia Petridou and Oliver Kraff and Norris, {David G.}",
note = "Elsevier deal",
year = "2020",
month = "2",
day = "1",
doi = "10.1016/j.jneumeth.2019.108518",
language = "English",
volume = "331",
journal = "Journal of neuroscience methods",
issn = "0165-0270",
publisher = "Elsevier",

}

Adapted cabling of an EEG cap improves simultaneous measurement of EEG and fMRI at 7T. / Meyer, Matthias C.; Scheeringa, René; Webb, Andrew G.; Petridou, Natalia; Kraff, Oliver; Norris, David G.

In: Journal of neuroscience methods, Vol. 331, 108518, 01.02.2020.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Adapted cabling of an EEG cap improves simultaneous measurement of EEG and fMRI at 7T

AU - Meyer, Matthias C.

AU - Scheeringa, René

AU - Webb, Andrew G.

AU - Petridou, Natalia

AU - Kraff, Oliver

AU - Norris, David G.

N1 - Elsevier deal

PY - 2020/2/1

Y1 - 2020/2/1

N2 - Background: The combination of EEG and ultra-high-field (7 T and above) fMRI holds the promise to relate electrophysiology and hemodynamics with greater signal to noise level and at higher spatial resolutions than conventional field strengths. Technical and safety restrictions have so far resulted in compromises in terms of MRI coil selection, resulting in reduced, signal quality, spatial coverage and resolution in EEG-fMRI studies at 7 T. New method: We adapted a 64-channel MRI-compatible EEG cap so that it could be used with a closed 32-channel MRI head coil thus avoiding several of these compromises. We compare functional and anatomical as well as the EEG quality recorded with this adapted setup with those recorded with a setup that uses an open-ended 8-channel head-coil. Results: Our set-up with the adapted EEG cap inside the closed 32 channel coil resulted in the recording of good quality EEG and (f)MRI data. Both functional and anatomical MRI images show no major effects of the adapted EEG cap on MR signal quality. We demonstrate the ability to compute ERPs and changes in alpha and gamma oscillations from the recorded EEG data. Comparison with existing methods: Compared to MRI recordings with an 8-channel open-ended head-coil, the loss in signal quality of the MRI images related to the adapted EEG cap is considerably reduced. Conclusions: The adaptation of the EEG cap permits the simultaneous recording of good quality whole brain (f)MRI data using a 32 channel receiver coil, while maintaining the quality of the EEG data.

AB - Background: The combination of EEG and ultra-high-field (7 T and above) fMRI holds the promise to relate electrophysiology and hemodynamics with greater signal to noise level and at higher spatial resolutions than conventional field strengths. Technical and safety restrictions have so far resulted in compromises in terms of MRI coil selection, resulting in reduced, signal quality, spatial coverage and resolution in EEG-fMRI studies at 7 T. New method: We adapted a 64-channel MRI-compatible EEG cap so that it could be used with a closed 32-channel MRI head coil thus avoiding several of these compromises. We compare functional and anatomical as well as the EEG quality recorded with this adapted setup with those recorded with a setup that uses an open-ended 8-channel head-coil. Results: Our set-up with the adapted EEG cap inside the closed 32 channel coil resulted in the recording of good quality EEG and (f)MRI data. Both functional and anatomical MRI images show no major effects of the adapted EEG cap on MR signal quality. We demonstrate the ability to compute ERPs and changes in alpha and gamma oscillations from the recorded EEG data. Comparison with existing methods: Compared to MRI recordings with an 8-channel open-ended head-coil, the loss in signal quality of the MRI images related to the adapted EEG cap is considerably reduced. Conclusions: The adaptation of the EEG cap permits the simultaneous recording of good quality whole brain (f)MRI data using a 32 channel receiver coil, while maintaining the quality of the EEG data.

KW - UT-Hybrid-D

KW - EEG

KW - EEG cap

KW - ERP

KW - fMRI

KW - Oscillations

KW - 7T

U2 - 10.1016/j.jneumeth.2019.108518

DO - 10.1016/j.jneumeth.2019.108518

M3 - Article

C2 - 31734326

AN - SCOPUS:85075443655

VL - 331

JO - Journal of neuroscience methods

JF - Journal of neuroscience methods

SN - 0165-0270

M1 - 108518

ER -