Publicación Oficial de la Sociedad Ecuatoriana de Neurología, de la Liga Ecuatoriana Contra la Epilepsia y de la Sociedad Iberoamericana de Enfermedad Cerebrovascular

EEG

 

Epilepsia del lóbulo temporal de inicio tardío en etapa post-Covid. Post-Covid Late onset temporal lobe epilepsy.

Introduction: Temporal lobe epilepsy (TLE) of is the most frequent form of adult epilepsy, temporal mesial sclerosis (TMS) is a common abnormality associated. It could appear at the end of second decades in life.

Case report: We report a male patient, 67 years old, who suffered moderated Covid 19. Six months, he started with seizures which characterized by gastric disturbances, hand and oral automatisms, teeth snapping, upper extremities rigidity and change of hands coloration. EEG showed interictal paroxystic activity over left frontal and central-temporal regions and also abnormalities in quantitative measures. MRI described frontal, parietal, occipital and temporal mesial atrophy with hyperintensity on mesial and hippocampal areas. The volumetric value was diminished on middle frontal and temporal gyrus, pre-central gyrus, parietal lobe, insular cortex and operculum, the value of cortical thickness was diminished on pre-central gyrus.

Conclusions: This is a case with unusual beginning of TLE due to TME post-Covid.

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Palabras clave: COVID-19, EEG, Epilepsia del Lóbulo temporal, esclerosis temporal mesial, IRM, volumetría,

Keywords: COVID-19, EEG, MRI, Temporal lobe’s epilepsy, temporal mesial sclerosis, volumetry,

Localización cerebral y actividad eléctrica del razonamiento abstracto mediante electroencefalografía cuantitativa: Una revisión sistemática. Brain localization and electrical activity of abstract reasoning using quantitative electroencephalography: A systematic review

Abstract reasoning is the ability to process and solve tasks by means of cognitive tools, based on analysis, synthesis, pattern recognition, among others, being classified as a characteristic of human intelligence. From neuropsychology it is important to know studies that have determined through neuroimaging techniques the location of the functional architecture of this cognitive ability. Therefore, the aim of this study is to identify brain areas and electrical activity using electroencephalography from abstract reasoning tasks. 

Through a systematic literature review based on the criteria of the PRISMA methodology, the academic databases PubMed, Sciencedirect, Scopus, Hinari, Dialnet, EBSCOhost were examined. The studies included in the review consist of articles from studies reviewed and published in the period 2016 to 2021. Ninety-six preliminary articles were identified, from which 16 studies were selected following the research inclusion and exclusion criteria. The results show that by performing different abstract reasoning tasks, synchronous neuronal interactions in the Theta-Alpha frequency range with main activation in frontal and parietal areas are observed by means of electroencephalography.

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Palabras clave: EEG, Electroencefalografía, inteligencia fluida, razonamiento, razonamiento abstracto,

Keywords: abstract reasoning, EEG, Electroencephalography, fluid intelligence, reasoning,
 
 
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