Magnetoencephalography source imaging
A magnetoencephalography and imaging technology, applied in the field of imaging technology, can solve problems such as inability to diagnose neuron damage
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[0023] Magnetoencephalography (MEG) is a technique used to map brain activity by recording the magnetic fields generated by electrical currents within cells in the brain. For example, synchronous electrical currents generated by neuronal cells can generate magnetic fields. For example, these magnetic signals can arise from the net effect of ionic currents flowing between neurons (e.g., during synaptic conduction), which can be modeled as electric dipoles, e.g., with position, orientation and amplitude currents and other non-dipole current sources that generate magnetic signals. Magnetic fields generated by neurons exhibit amplitudes on the order of femto-Tesla (fT), e.g., 10 for cortical activity. 1 fT and 10 for human alpha rhythm 3 fT. These neuronal magnetic signals can be detected by sensitive magnetometers. However, these neuronal magnetic signals are relatively weak compared to the typical ambient magnetic noise of the external body environment (which can be, for exa...
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