Methods and requirements for accurate localisation of sensors in on-scalp magnetoencephalography
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ii Abstract (in Swedish) iiiin Swedish) iii
منابع مشابه
Synchronised oscillations of the human sensorimotor cortex.
Oscillations are a prominent feature of macroscopic human sensorimotor cortical activity as recorded non-invasively with electroencephalography (EEG) and magnetoencephalography (MEG). The advent of whole-scalp MEG systems allowing rapid non-invasive recording from the entire cortex and accurate localisation of neural sources, and the development of refined signal analysis methods are important ...
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Recorded electric potentials and magnetic fields due to cortical electrical activity have spatial spread even if their underlying brain sources are focal. Consequently, as a result of source cancellation, loss in signal amplitude and reduction in the effective signal-to-noise ratio can be expected when distributed sources are active simultaneously. Here we investigate the cancellation effects o...
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Localisations of intracranial electromagnetic sources with magnetoencephalography (MEG) are usually computed with mathematical models that approximate the skull volume by means of a homogenous sphere fitted to the surface of the skull where the sensors record strong magnetic field gradients. In a study of the validity of the spherical model, localisation accuracy was determined using an artific...
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تاریخ انتشار 2016