Magnetic field tomography of cortical and deep processes: examples of 'real-time mapping' of averaged and single trial MEG signals
| Autor: | M.J. Liu, K.M. Stephan, E. Hellstrand, Panagiotis D. Bamidis, L.C. Liu, A.A. Ioannides |
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| Rok vydání: | 1995 |
| Předmět: |
Adult
Male Brain activity and meditation Nuclear magnetic resonance Computer Systems Physiology (medical) Humans Real time mapping Ictal Evoked potential Tomography Cerebral Cortex Epilepsy General Neuroscience Brain Magnetoencephalography Epileptic activity Magnetic field Neuropsychology and Physiological Psychology Acoustic Stimulation Evoked Potentials Auditory Single trial Psychology human activities Neuroscience |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 0167-8760 |
| DOI: | 10.1016/0167-8760(95)00031-3 |
| Popis: | Magnetic field tomography (MFT) provides 3-dimensional estimates of brain activity, from non-contact, non-invasive measurements of the magnetic field generated by coherent electrical activity in the brain. MFT analysis of averaged auditory “odd-ball” data show cortical and deep activation, presumably from the amygdala and hippocampus. These results are compared with MFT estimates obtained from a patient who had undergone lobectomy which removed these structures. The variability from subject to subject is confounded by variability between trials for the same subject; the relationship between the averaged and single trials is probed by bi-hemispheric simultaneous measurements performed under the same odd-ball paradigm and by MFT analysis of auditory evoked data and interictal epileptic activity. |
| Databáze: | OpenAIRE |
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