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Inversion of Meg Data for a 2 D Current Distribution

Inversion of Meg Data for a 2 D Current Distribution

... J r Q r D  (19) We can utilize the coordinate invariance principle to simplify our calculations. We actually want to calculate the total magnetic potential, given in (5), which is generated by the approximate current ...

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An ensemble de-noising method for spatio-temporal EEG and MEG data

An ensemble de-noising method for spatio-temporal EEG and MEG data

... EEG/ MEG data is to use wavelet de-noising, which is a time-frequency method to recover an unknown tran- sient signal from broadband noise ...the data, the noise will remain spread across the ...

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Evidence of syntactic working memory usage in MEG data

Evidence of syntactic working memory usage in MEG data

... This study found that alpha coherence between the anterior and posterior regions of the left hemisphere of the brain is significantly correlated with embed- ding depth, which suggests that alpha coherence may reflect an ...

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Separation of phase-locked sources in pseudo-real MEG data

Separation of phase-locked sources in pseudo-real MEG data

... pseudo-real MEG data. These data are not yet meant to allow inference about the human brain; however, they are generated in such a way that both the sources and the mixing process mimic what actually ...

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A comparative study of a theoretical neural net model with MEG data from epileptic patients and normal individuals

A comparative study of a theoretical neural net model with MEG data from epileptic patients and normal individuals

... the MEG of epileptic patients and normal subjects in order to compare the theoretical neural net model [10-12] with real ...the MEG data by x 2 -fitting revealed that the MEG ...

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Potential Biomarkers of Schizophrenia from MEG Resting State Functional Connectivity Networks: Preliminary Data

Potential Biomarkers of Schizophrenia from MEG Resting State Functional Connectivity Networks: Preliminary Data

... resting-state MEG data were prepared for source imaging by division into 80 segments, each containing ...of data of relatively uniform brain activity. For each of these data segments, signals ...

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MEG as a Medical Diagnostic Tool in the Greek Population

MEG as a Medical Diagnostic Tool in the Greek Population

... of MEG in patients and healthy volunteers in the Greek popu- ...The MEG data were recorded in a magnetically shielded room with a whole-head 122 channel or an one-channel ...the MEG is an im- ...

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A multi layer network approach to MEG connectivity analysis

A multi layer network approach to MEG connectivity analysis

... previous MEG investigations ...of MEG may mean that, in some cases multiple AAL regions may generate degenerate timecourses, whilst in other cases a single region may contain multiple independent ...the ...

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Detecting Semantic Category in Simultaneous EEG/MEG Recordings

Detecting Semantic Category in Simultaneous EEG/MEG Recordings

... that MEG data allowed stim- uli in two semantic categories (mammals and tools) to be distinguished more accurately, de- spite some experimental settings that were op- timised for ...EEG data did not ...

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MEG responses to the perception of global structure within glass patterns

MEG responses to the perception of global structure within glass patterns

... of MEG in combination with radial, rotational and horizontal Glass pattern stimuli ...[22]. MEG provides a direct measure of neural function in that the recorded signals reflect electrical activity of ...

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Bayesian optimization of large scale biophysical networks

Bayesian optimization of large scale biophysical networks

... real MEG data, with very few samples given the number of parameters, without getting stuck in local extrema, and while building and exploiting a map of uncertainty defined smoothly across the parameter ...

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The influence of methylphenidate on the power spectrum of ADHD children – an MEG study

The influence of methylphenidate on the power spectrum of ADHD children – an MEG study

... the MEG data by subtracting external, non-biological noise recorded by 11 MEG reference ...The data was then split into epochs of 2500 ms length and was cor- rected for eye and cardiac ...

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Classification of MEG signals using RCSP and SVM

Classification of MEG signals using RCSP and SVM

... MEG data. Brain activity during wrist movements was recorded with MEG at 625 Hz from two healthy, right-handed ...subjects. MEG data of two different subjects were processed using ...

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Correlations of Hippocampal Atrophy and Focal Low Frequency Magnetic Activity in Alzheimer Disease: Volumetric MR Imaging Magnetoencephalographic Study

Correlations of Hippocampal Atrophy and Focal Low Frequency Magnetic Activity in Alzheimer Disease: Volumetric MR Imaging Magnetoencephalographic Study

... MEG data were measured by using a 148-channel whole- head magnetometer (Magnes 2500 WH; 4D Neuroimaging, San Diego, CA) during a 10-minute resting ...The MEG was recorded with a ...Demographic ...

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The relationship between MEG and fMRI

The relationship between MEG and fMRI

... in MEG oscillatory power during a task implies that if the large scale distributed networks observable in fMRI were to be measured in MEG, then assessment of band limited power correlation would be ...

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On the potential of a new generation of magnetometers for MEG: a beamformer simulation study

On the potential of a new generation of magnetometers for MEG: a beamformer simulation study

... present, MEG measurements are limited, particularly at high ...SQUID-based MEG systems [26, 60], however efforts to characterise their behaviour have been hampered by low ...

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The neural correlates of verbs and nouns: a MEG study on Italian homophones

The neural correlates of verbs and nouns: a MEG study on Italian homophones

... the data from aphasiology and neuropsychology; at least partially distinct neuronal networks, which operate under a common neuromechanism of lexical processing, modulate verbal and nominal ...

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Characterizing the spatiotemporal profile and the level of abstractness of action representations: neural decoding of magnetoencephalography (MEG) and functional magnetic resonance imaging (fMRI) data

Characterizing the spatiotemporal profile and the level of abstractness of action representations: neural decoding of magnetoencephalography (MEG) and functional magnetic resonance imaging (fMRI) data

... in MEG is that the processing of each stimulus category is associated with a specific neural activity that induces an oscillatory signal (or neural pattern) consisting of a unique combination of sensor, time, and/ ...

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Health-Related Quality of Life and Depressive Symptoms in Adolescents With Extreme Obesity Presenting for Bariatric Surgery

Health-Related Quality of Life and Depressive Symptoms in Adolescents With Extreme Obesity Presenting for Bariatric Surgery

... first data to document marked impairments in HRQoL across all domains, including physical function- ing, emotional well-being, social relations, and school ...

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Quantification of drought during the collapse of the classic Maya civilization

Quantification of drought during the collapse of the classic Maya civilization

... Modern Lake Water Paleo-lake Water Modeled Gypsum Precipitation No gypsum precipitation.. O-excess per meg.[r] ...

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