This article investigates the representation of “dulle Griet” by the seventeenthcentury artists David II Teniers and David III Ryckaert in the context of Catholic Flanders. In a society preoccupied with hierarchical order both the state and church aimed to root out archaic beliefs and customs, and to save society from witchcraft. The representations of mad Meg are interpreted as comic archaisms...

Aim This study aimed to investigate gamma oscillations related face processing of children with autism spectrum disorders and typically developed using magnetoencephalography. Methods We stimuli that included naturalistic real-time eye-gaze situations between participants their mothers. Eighteen young (62−97 months) 24 (61−79 were included. The magnetoencephalography data analyzed in the bilate...

Independent component analysis (ICA) is a class of decomposition methods that separate sources from mixtures of signals. In this chapter, we used second order blind identification (SOBI), one of the ICA method, to demonstrate its advantages in identifying magnetic signals associated with neural information processing. Using 122-channel MEG data collected during both simple sensory activation an...

Neural currents give rise to electroencephalogram (EEG) and magnetoencephalogram (MEG). MEG has selective sensitivity to tangential currents (from fissural cortex), and less distorted signals compared with EEG. A major goal of MEG is to determine the location and timing of cortical generators for event-related responses, spontaneous brain oscillations or epileptiform activity. MEG provides a sp...

Complex numbers appear naturally in biology whenever a system can be analyzed in the frequency domain, such as physiological data from magnetoencephalography (MEG). For example, the MEG steady state response to a modulated auditory stimulus generates a complex magnetic field for each MEG channel, equal to the Fourier transform at the stimulus modulation frequency. The complex nature of these da...

Abstract Magnetoencephalography (MEG) is a non-invasive technique that measures the magnetic fields produced by brain's electrical currents. The basic inverse problem of magnetoencephalography consists in estimating neuronal current brain from measurement field outside head. relative inversion algorithms, existing medical devices, for identification excitation sources inside using MEG data, are...