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Vol. 7. Issue 3.
Pages 171-180 (January 1996)
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Vol. 7. Issue 3.
Pages 171-180 (January 1996)
Sistema automatizado de registro de la actividad eléctrica de estructuras profundas del sistema nervioso central
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J. Teijeiro Amador, R.J. Macías González, J.L. Muñoz Aguiar, L.M. Alvarez González, L. Ochoa Zaldívar, W. Soler Alayón
Centro Internacional de Restauración Neurológica, La Habana, Cuba
Ch. Ohye*
* Universidad de Gunma, Gunma, Japón
J.M. Antelo**
** Centro de Neurociencias, La Habana, Cuba
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Resumen

Este trabajo describe un sistema automatizado para el registro, procesamiento y análisis de la actividad eléctrica de las estructuras profundas del Sistema Nervioso Central, que se ha desarrollado en el Centro Internacional de Restauración Neurológica de Cuba para ser utilizado en la neurocirugía funcional estereotáxica guiada por semi-microrregistros profundos del cerebro. El sistema NDRS (Neurorestorative Deep Recording System) permite la simulación de un osciloscopio digital y distintos tipos de procesamientos de las señales como son: la discriminación, la integración y el análisis espectral de Fourier. El gráfico del comportamiento de la actividad integrada a lo largo de la trayectoria seguida dentro del cerebro, puede ser superpuesto sobre la correspondiente vista sagital del Atlas Cerebral de Schaltenbrand-Wahren lugo de un escalamiento apropiado de la misma. El sistema brinda además la posibilidad de procesamiento y edición de los datos ya registrados y grabados en el disco de la computadora, así como su exportación en formatos «standard», lo que lo hace compatible con otros sistemas. Posee una «interface» basada en ventanas de «Ayuda» para el usuario, disponibles en todo momento. Este sistema de programas permite la utilización de una computadora personal 80486 IBM compatible en sustitución de equipos electrónicos complejos y costosos, facilitando además la manipulación de la información registrada y la implementación de una mayor variedad de análisis. Hasta el presente el NDRS ha sido utilizado con éxito, contribuyendo a aumentar la seguridad en la correcta selección de los lugares de lesión o implante en más de 110 intervenciones neuroquirúrgicas de Vim-Talamotomías, Palidotomías y Neurotrasplantes, para el control de los diferentes síntomas de la enfermedad de Parkinson y otros movimientos anormales.

Palabras Clave:
Neurocirugía funcional
Microrregistro profundo del cerebro
Proceso digital de señales
Análisis espectral de Fourier
Abstract

This paper describes a computer system to record and process the deep brain electrical activity, during functional and stereotactic neurosurgery. The NDRS program system (Neurorestorative Deep Recording System), developed at the International Neurological Restorative Center in Cuba, allows a digital osciloscope simulation with different graphic facilities in real time and some signal processing: spike amplitude discrimination, signal integration as a quiantification of its general amplitude, and spectral Fourier analysis to study the correlation between different simultaneous signals. The behavior of the integrated activity can be shown on the electrode trajectory into the brain. This graphic can be superimposed on any selected sagittal. plane of the Schaltenbrand and Wahren Atlas, after its automatic scaling according to the brain dimensions of each patient. The system also allows the possibility to reprocess and edit the recorded data, saved in the computer disk, as well as to export them in standard format, making it compatible with other processing systems. lt has an interface oriented to facilitate the user's work, with help-windows available at every moment. Using an 80386/80486 IBM compatible personal computer this program system substitutes the signal analogical processing equipments, which are expensive and have specific purposes. Therefore, it has more flexibility for the recorded data manipulation and to include other kind of analysis. Up to this moment, the NDRS has been successfully used, contributing to increase the safety in the correct selection of the therapeutic lesion or implantation sites in more than 110 neurosurgical procedures (Vim-Thalamotomies, Pallidotomies, Subthalamotomies and Nurotransplantations) to control different symptons of Parkinson's disease and other movement disorders.

Key Words:
Functional Neurosurgery
Deep Brain Microrecording
Digital Signal Processing
Fourier Spectral Analysis

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