Combined EEG and MEG acquisition was performed in a magnetically shielded room (Imedco AG, Hägendorf, Switzerland) using a low-impedance EEG cap (BrainCap MEG, Brain Vision, LLC, Morrisville, NC, USA) with 60 scalp electrode locations based on the 10–10 system and a whole-head MEG system (Elekta Neuromag, Helsinki, Finland). The acquisition system (Elekta Neuromag) was the same for EEG and MEG. Only scalp EEG activity is reported here. MEG results will be discussed in a separate report. Data were recorded with a sampling rate of 3000 Hz and an online bandpass filter of 0.1 to 1000 Hz. Additional EEG electrodes were placed in the left mastoid (online EEG reference), right mastoid, back of the neck (ground), below the left clavicle (ECG), and below the left eye (VEOG). Two bipolar electrodes were also placed on the outer canthi of both eyes (HEOG).
Whole head meg system
Manufactured by Elekta
Sourced in Finland
The Whole-head MEG system is a medical imaging device that utilizes magnetoencephalography (MEG) technology to measure the magnetic fields generated by the brain's electrical activity. It is designed to capture a comprehensive view of the brain's neural activity across the entire head.
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Lab products found in correlation
2 protocols using whole head meg system
1
Multimodal Brain Imaging: EEG and MEG
2
MEG Recordings for Epilepsy Presurgical Evaluation
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MEG recordings were obtained during routine clinical practice using a whole-head MEG system (Elekta Neuromag Oy, Helsinki, Finalnd) with 306 channels consisting on 102 magnetometers and 204 gradiometers. The patients were in supine position inside a magnetically shielded room (Vacummshmelze GmbH, Hanau, Germany). Typically, three data-sets of 10 to 15 minutes each containing eyes-closed resting-state recordings were acquired and used in the presurgical evaluation for the identification and localization of interictal epileptiform activity.
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