Potenciais Registrados ao Redor da Medula Espinhal
Diferentes Lados do Mesmo Dado
DOI:
https://doi.org/10.34024/rnc.2013.v21.8169Palavras-chave:
Potenciais Evocados, Somatossensitivo, Medula Espinhal, História, EletrofisiologiaResumo
Introdução. A Neurofisiologia Clínica é pesadamente baseada na interpretação de campos elétricos de potencial. Tais interpretações podem por vezes criar objetos conceituais diferentes que com o tempo acabam mostrando-se como diferentes aspectos do mesmo fenômeno. Um exemplo ilustrativo é representado pelos campos de potenciais ao redor da medula espinhal sob uma perspectiva histórica. Método. Uma breve revisão histórica é feita dos potenciais registrados ao redor da medula espinhal. Resultados. São descritos o reflexo da raiz dorsal, o potencial da raiz dorsal, o potencial de dorso medular e a despolarização aferente primária. Conclusão. Estes potenciais são predominantemente diferentes aspectos do mesmo gerador – as atividades segmentares medulares – secundários ao registro por diferentes montagens.
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