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Biomedical subjects

P Walerjan

Publications and source records attributed to P Walerjan.

2 recordsLinked to original sources

PC based EEG mapping system.

A PC based program has been designed for analysis of EEG data using brain electrical activity mapping technique. It operates under control of MS-DOS operating system and can be used as a stand alone program or incorporated into a digital EEG system. The program can apply different map interpolation algorithms from nearest neighbours methods to spherical spline functions. It performs analyses in the time and frequency domain. It applies different mapping parameters like amplitude, spectral values and a new one--first time derivative of amplitude. The program is being successfully used in clinical tests of epilepsy and Parkinson disease in our laboratory.

Brain Mapping↗

[Automatic analysis of frequency spectrum in localization of topography of epileptic discharges at early stages of the disease].

The authors present the value of frequency spectrum analysis in the method of cerebral mapping for the diagnosis and localization of epileptic focus. The patient aged 17 years showed atypical clinical symptoms. The study made possible confirmation of epilepsy, demonstration of two independent epileptogenic foci, and correlation of the atypical clinical syndrome with the location of the foci. The results are presented on topographic maps of the brain.

Adolescent↗