MEG data were acquired in a magnetically shielded room using the whole‐scalp MEG system (Elekta‐Neuromag, Helsinki, Finland; http://www.bcbl.eu/bcbl-facilitiesresources/meg/ ) installed at the BCBL. The system is equipped with 102 sensor triplets (each comprising a magnetometer and two orthogonal planar gradiometers) uniformly distributed around the head of the participant. The head position inside the helmet was continuously monitored using four Head Position Indicator coils. The location of each coil relative to the anatomical fiducials (nasion, left and right preauricular points) was defined with a 3D digitizer (Fastrak Polhemus, Colchester, VA, USA). This procedure is critical for the compensation of head movements in MEG data. Digitalization of the fiducials together with ~100 additional points evenly distributed over the scalp of the participant were used during subsequent data analysis to spatially align the MEG sensor coordinates with the T1 magnetic resonance brain images acquired on a 3T MRI scan (Siemens Medical System, Erlangen, Germany). MEG recordings were acquired continuously with a bandpass filter at 0.01–330 Hz and a sampling rate of 1 kHz. Eye movements were monitored with two pairs of electrodes in a bipolar montage placed on the external chanti of each eye [horizontal electrooculography (EOG)] and above and below the right eye (vertical EOG).
Whole scalp meg system
Manufactured by Elekta
Sourced in Finland
The Whole‐scalp MEG system is a magnetoencephalography (MEG) system that allows for the measurement of magnetic fields generated by the brain's electrical activity. It is designed to record the brain's neural signals with high temporal resolution, providing insights into the dynamic processes of the brain.
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Lab products found in correlation
2 protocols using whole scalp meg system
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Magnetoencephalography Data Acquisition Protocol
2
Whole-scalp MEG data acquisition protocol
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MEG data were acquired in a magnetically shielded room using the whole-scalp MEG system (Elekta-Neuromag, Helsinki, Finland; http://www.bcbl.eu/bcbl-facilitiesresources/meg/) installed at the BCBL. The system is equipped with 102 sensor triplets (each comprising a magnetometer and two orthogonal planar gradiometers)
uniformly distributed around the head of the participant. The head position inside the helmet was continuously monitored using four Head Position Indicator coils. The location of each coil relative to the anatomical fiducials (nasion, left and right preauricular points) was defined with a 3D digitizer (Fastrak Polhemus, Colchester, VA, USA). This procedure is critical for the compensation of head movements in MEG data.
Digitalization of the fiducials together with ~100 additional points evenly distributed over the scalp of the participant were used during subsequent data analysis to spatially align the MEG sensor coordinates with the T1 magnetic resonance brain images acquired on a 3T MRI scan (Siemens Medical System, Erlangen, Germany). MEG recordings were acquired continuously with a bandpass filter at 0.01-330 Hz and a sampling rate of 1 kHz. Eye movements were monitored with two pairs of electrodes in a bipolar montage placed on the external chanti of each eye (horizontal electrooculography (EOG)) and above and below the right eye (vertical EOG).
uniformly distributed around the head of the participant. The head position inside the helmet was continuously monitored using four Head Position Indicator coils. The location of each coil relative to the anatomical fiducials (nasion, left and right preauricular points) was defined with a 3D digitizer (Fastrak Polhemus, Colchester, VA, USA). This procedure is critical for the compensation of head movements in MEG data.
Digitalization of the fiducials together with ~100 additional points evenly distributed over the scalp of the participant were used during subsequent data analysis to spatially align the MEG sensor coordinates with the T1 magnetic resonance brain images acquired on a 3T MRI scan (Siemens Medical System, Erlangen, Germany). MEG recordings were acquired continuously with a bandpass filter at 0.01-330 Hz and a sampling rate of 1 kHz. Eye movements were monitored with two pairs of electrodes in a bipolar montage placed on the external chanti of each eye (horizontal electrooculography (EOG)) and above and below the right eye (vertical EOG).
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