An Experimental Study on BEM-Based Cortical Imaging of Human SEP Activities
نویسندگان
چکیده
The boundary element method (BEM) based cortical imaging technique (CIT) has been applied to an experimental study on human somatosensory evoked potentials (SEPs) recorded from a patient. The accuracy of the analysis was determined by comparing SEPs recorded from the scalp with those recorded directly from the patient's cortex. The results indicate that the CIT improved the spatial resolution of the scalp potentials, and the reconstructed cortical potential maps are consistent with the direct cortical recordings. Keyword – EEG, cortical imaging, SEP, BEM
منابع مشابه
Experimental Validation of Forward and Inverse Solutions for Electrical Impedance Tomography Using the Boundary Element Method
We report on the results of an EIT phantom study using an experimental tank with agar conductivity inhomogeneities, used to verify the accuracy of both a boundary element method (BEM) forward model and a non-linear inverse solution based on the BEM model. We introduce the shunt electrode model into the BEM equations for greater accuracy and derive the associated Jacobian for the inverse problem...
متن کاملParallel processing in human audition and post-lesion plasticity
Recent activation and electrophysiological studies have demonstrated that sound recognition and localization are processed in two distinct cortical networks that are each present in both hemispheres. Sound recognition and/or localization may be, however, disrupted by purely unilateral damage, suggesting that processing within one hemisphere may not be sufficient or may be disturbed by the contr...
متن کاملParallel processing in human audition and post-lesion plasticity
Recent activation and electrophysiological studies have demonstrated that sound recognition and localization are processed in two distinct cortical networks that are each present in both hemispheres. Sound recognition and/or localization may be, however, disrupted by purely unilateral damage, suggesting that processing within one hemisphere may not be sufficient or may be disturbed by the contr...
متن کاملInnovative boundary integral and hybrid methods for diffuse optical imaging
Diffuse Optical Imaging (DOI), the study of the propagation of Near Infra-Red (NIR) light in biological media, is an emerging method in medical imaging. Its state-of-the-art is non-invasive, versatile and reasonably inexpensive. In Diffuse Optical Tomography (DOT), the adaptation of numerical methods such as the Finite Element Method (FEM) and, more recently the Boundary Element Method (BEM), h...
متن کاملAn Experimental Study on Blinking and Eye Movement Detection via EEG Signals for Human-Robot Interaction Purposes Based on a Spherical 2-DOF Parallel Robot
Blinking and eye movement are one of the most important abilities that most people have, even people with spinal cord problem. By using this ability these people could handle some of their activities such as moving their wheelchair without the help of others. One of the most important fields in Human-Robot Interaction is the development of artificial limbs working with brain signals. The purpos...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2001