{"ok":true,"nota":{"id":"a2439344f91418de","slug":"tras-una-crisis-de-ausencia-epileptica-el-cerebro-queda-mas-activo-de--a24393","titulo":"Tras una crisis de ausencia epiléptica, el cerebro queda más activo de lo que se pensaba","resumen":"Analizaron electroencefalogramas de 55 pacientes con crisis de ausencia para ver qué pasa en el cerebro después de que termina la crisis. Encontraron un aumento de actividad eléctrica que se sostiene más de lo que se suponía.","fuente":"medrxiv","fuenteNombre":"medRxiv · preprints","color":"#1f7a4d","autor":"Sharma, A., Khalaf, A., Beniczky, S., Glauser, T., Blumenfeld, H.","url":"https://www.medrxiv.org/content/10.64898/2026.10.20.26366013v1?rss=1","imagen":"/hoy/portada/a2439344f91418de","tema":"salud","subtemas":["epilepsia","crisis de ausencia","electroencefalograma","neurologia","cerebro"],"entidades":["medRxiv"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-22T00:00:00.000Z","indexTs":"2026-10-22T23:31:13.378Z","hash":"8a9834d697ca1b3015472899aa2d84e2a0574ef6f257d4d363cc2fba06ae11c4","tsa":{"time":"Oct 22 23:32:06 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"Durante mucho tiempo se creyó que las crisis de ausencia no dejaban huella en el cerebro, y este estudio muestra que sí hay un período de actividad elevada después de cada episodio. Para una persona que convive con estas crisis, entender ese momento posterior puede ayudar a los médicos a explicar síntomas como el cansancio o la confusión. Pero es un estudio observacional con 55 personas, y todavía no se sabe qué significa exactamente esa actividad. Cambiar un tratamiento a partir de esto sería prematuro.","quienFirma":"medRxiv · preprints","confianza":"preprint","consulta":null},"sello":{"hash":"8a9834d697ca1b3015472899aa2d84e2a0574ef6f257d4d363cc2fba06ae11c4","sello":"20d1f20063c588ab299ae165de5878d30c612324822e6225ecfcd7929a0bc18a","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6576029,"aleatorio":"69283f2fd8851a8002724d67837843bb8976a4586c383157298d64ec1d5a13b2","tiempo":"2026-10-22T23:31:30.000Z"},"nist":{"cadena":2,"pulso":1995214,"salida":"70537C3225E32BF1087CE09A63B5B27ED328E3F6DCEBA086BA2A8C346D9A96196BB6F2563A9A354265AFE9D778A41AB61A1BEBBBBCE5474D3C95C4F9550715BF","tiempo":"2026-10-22T23:31:00.000Z"},"noAntes":"2026-10-22T23:31:30.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 22 23:32:06 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"Cortical physiological arousal following termination of absence seizures","descripcion":"Although the brain state preceding and during absence seizures has been well-characterized, the postictal brain state remains largely unexplored due to the prevailing assumption that absence seizures have minimal or no postictal changes. To address this gap, scalp EEG recordings from 55 patients with 3-4 Hz spike-wave discharges across four multi-site cohorts were analyzed. Spectral power was measured relative to each seizure's preictal baseline, and the postictal period was compared to a time-matched preictal window. Rather than an immediate return to baseline after seizure offset, a significant broadband increase in EEG power was observed in the gamma (>25 Hz) and delta (<4 Hz) frequency b","pubDate":"2026-10-22","url":"https://www.medrxiv.org/content/10.64898/2026.10.20.26366013v1?rss=1"},"indexado":"2026-10-22T23:31:13.378Z"}}