Download Clinical Electrophysiology of the Somatosensory Cortex: A by Christoph Baumgartner PDF

By Christoph Baumgartner

The scientific electrophysiology of the human somatosensory cortex used to be investigated with a mixed procedure utilizing cortical stimulations and somatosensory evoked responses on electrocorticography, scalp-EEG, and magnetoencephalography, a brand new neurophysiological approach. The spatiotemporal constitution of the evoked reaction was once studied with novel biophysical modeling thoughts which allowed identity of the 3-dimensional intracerebral situation, time task, and interplay of the neuronal resources in human somatosensory cortex. hence, new points at the practical anatomy of the human somatosensory cortex will be elicited. moreover, the somatotopy of the hand somatosensory cortex was once investigated. Clinically, the result of comparability of the various strategies can enhance the non-invasive localization standards for basic motor and somatosensory cortex that's vital in sufferers present process neurosurgical techniques adjoining to vital fissure.

Show description

Read Online or Download Clinical Electrophysiology of the Somatosensory Cortex: A Combined Study Using Electrocorticography, Scalp-EEG, and Magnetoencephalography PDF

Similar clinical books

Free Radicals in Diagnostic Medicine: A Systems Approach to Laboratory Technology, Clinical Correlations, and Antioxidant Therapy

A global Syaposiua on loose Radicals in Diagnostic medication was once co-sponsored via the kingdom collage of recent York at Buffalo, Roswell Park melanoma Institute, and the Upstate long island part of the yank organization of scientific Chemistry. The subject matter was once "A platforms method of Laboratory know-how, medical Correlations And Antioxidant remedy.

Corneal Sensitivity: Measurement and Clinical Importance

We in ophthalmology are lucky with the intention to degree quantitatively many elements of ocular morphology and visible functionality. those measurements are both aim (e. g. electroretinography, tonometry, electromyography, visually evoked responses, and so forth. ) or subjective and psychophysical (e. g. visible acuity, visible fields, colour imaginative and prescient, and so forth.

Clinical Aspects of Renovascular Hypertension

Diagnostic and healing equipment and controversies within the administration of renovascular high blood pressure have passed through significant ch- ges in past times few years. This publication relies at the lawsuits of a winning postgraduate Boerhaave direction held in 1982 on the college of medication of the college of Leiden, The Netherlands.

Clinical Diagnosis of Mental Disorders: A Handbook

For hundreds of years the "treatment" of mentally disturbed contributors used to be very simple. They have been accused of collusion with evil spirits, hunted, and persecuted. The final "witch" used to be killed as overdue as 1782 in Switzerland. Mentally disturbed humans didn't fare far better even if the witchhunting days have been long past.

Additional info for Clinical Electrophysiology of the Somatosensory Cortex: A Combined Study Using Electrocorticography, Scalp-EEG, and Magnetoencephalography

Example text

Either realistically brain shaped or spherical volume conductors can be assumed. Brain shaped models allow for realistic modeling of head geometry and conductivity changes. These 20 General Methodology models are more accurate. e. finite difference or finite element models, have to be employed (157,242,243,337,338]. Spherical models, on the contrary, only allow for modeling of concentric changes in conductivity. They are simpler as analytic solutions have been provided and inverse solutions can be obtained with reasonable computational effort on a personal computer [83, 84,202,337,338,369,370,372].

We used the technique proposed by Wood et al. e. to obtain reasonable start values for the non-linear minimization procedure in the multiple dipole model. 6. 1. Introduction Biophysical models have to be applied to solve the inverse problem in neurophysiology, i. e. to calculate backwards from the electric potentials or magnetic fields measured at the scalp (scalp-EEG and MEG) or on the cortical surface (EeoG) unto the three-dimensional intracerebral locations and time activities of the underlying neuronal sources.

2. Simulation Study We will demonstrate the basic principles of the spatiotemporal modeling in a simple simulation experiment on scalp-EEG. Details of this simulation experiment have been presented in a separate article [40]. It should be noted that the conclusions of this experiment equally apply to EeoG, scalp-EEG, and MEG without any loss of generality. We placed current dipoles at different locations inside a spherical volume conductor and calculated the potentials at 49 electrode sites on the surface of the sphere thus simulating a situation that could arise in the scalpEEG.

Download PDF sample

Rated 4.25 of 5 – based on 7 votes