This paper presents a multivariate analysis of evoked responses and their spatiotemporal dynamics as measured with electro- or magnetoencephalography. This analysis uses standard techniques (ManCova) to make possible statistical inference about differential responses, after the data have been transformed using singular value decomposition. The generality of this approach is limited only by the ...

in recent years, the scientists have focused on nanotecnology and its applications as the most important fields of research and development. the use of nanoparticles offers many advantages, due to their unique size and physical properties. magnetic iron oxide nanoparticles have been used in many fields, because of their unique properties such as large specific surface area and convenient separa...

The first measurements of magnetic fields accompanying voluntary movements using single channel magnetometers [10, 15] indicated that slow pre-movement shifts, similar to the electrically recorded readiness potential, or Bereitschaftspotential [20], could be recorded over sensorimotor areas of the brain. In subsequent studies, my colleagues and I found that these slow magnetic field shifts bega...

The central representation of sensory perception relates in an orderly way to the spatial arrangement of receptors in the periphery. The cortical maps of visual space (retinotopy), the body surface (somatotopy), or tone frequency (cochlear place; tontotopy) can be individually determined by means of magnetic source imaging. In a similar manner, it is possible to map motor organization along the...

Magnetoencephalography (MEG), as a non-invasive procedure, records magnetic fields generated by spontaneous or evoked brain activity. Presurgical evaluation of pharmacoresistent patients with focal epilepsy is currently the most frequent diagnostic application. The source of epileptic or averaged evoked activity is localised and then overlaid onto magnetic resonance imaging (MRI) of the patient...

Vertigo is sometimes experienced in and around MRI scanners. Mechanisms involving stimulation of the vestibular system by movement in magnetic fields or magnetic field spatial gradients have been proposed. However, it was recently shown that vestibular-dependent ocular nystagmus is evoked when stationary in homogenous static magnetic fields. The proposed mechanism involves Lorentz forces acting...

Transcranial magnetic stimulation (TMS) is a widely used experimental and clinical technique that directly induces activity in human cortex using magnetic fields. However, the neural mechanisms of TMS-induced activity are not well understood. Here, we introduce a novel method of imaging TMS-evoked activity using a non-invasive fast optical imaging tool, the event-related optical signal (EROS). ...