We used the real dataset described in Wakeman et al. [dataset] . MEG/EEG data were simultaneously recorded during a face recognition task where a subject is shown famous, unknown or scrambled faces. The dataset also contains dMRI and T1 images. The stimuli (photos) were projected onto a screen (black background with a white fixation cross in the center) approximately 1.3 m in front of the participants. The start of the trial was indicated by the appearance of the fixation cross for a random duration. A gray-scale photograph was then projected onto the screen for a random duration between 800 and 1000 ms. The interval between two successive face projections is 1700 ms [dataset] . Both MEG (Elekta Neuromag Vectorview 306 system, 102 magnetometers, and 204 gradiometers) and EEG (70 electrodes conforming to the extended 10-10 system) were measured in a light magnetically shielded room. The data was presented to the subjects in six runs of 7.5 min each. In this work, we have used the data of the eleven subjects that have T1 and dMRI images.
Neuromag vectorview 306 system
Manufactured by Elekta
The Neuromag Vectorview 306 system is a comprehensive magnetoencephalography (MEG) device designed for neurological research and clinical applications. It features a 306-channel sensor array that measures the magnetic fields produced by the brain's electrical activity. The system provides precise spatial and temporal information about brain function, allowing researchers and clinicians to study neural processes with high resolution.
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Lab products found in correlation
2 protocols using neuromag vectorview 306 system
1
Face Recognition Neuroimaging Dataset
2
Symmetric Face Perception Experiment
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The data of 16 participants performing a simple perceptual task are freely available on the OpenNeuro platform [5 (link)]. The accession number is ds000117. There were 19 participants in the age range of 23 to 37 according to Wakeman and Henson’s original work [5 (link)]. All were Caucasian except for one Asian participant [5 (link)]. However, only 16 participants’ data are currently available on the open-source platform, which were from 7 females and 9 males. Since this experiment has been discussed in detail elsewhere [5 (link)], only a brief introduction is provided in this article. In the experiment, participants were instructed to make judgments on how symmetric they perceived a face stimulus to be, by pressing one of the two keys available to indicate whether they thought it was more or less symmetrical than an average face. The stimuli set consisted of grayscale photographs of famous, unfamiliar, and scrambled faces. A fixation cross appeared on screen for a duration between 400 and 600 ms at random. The target stimulus of either a face or scrambled face was then presented to the participants for a duration between 800 and 1000 ms. The original dataset comprises MEG and EEG simultaneous recordings using Elekta Neuromag Vectorview 306 system. We focused on the MEG portion in our analysis.
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