{"ok":true,"nota":{"id":"c90ce5921c5eb1e0","slug":"la-capacidad-de-concentracion-cambia-como-el-cerebro-procesa-lo-que-es-c90ce5","titulo":"La capacidad de concentración cambia cómo el cerebro procesa lo que escucha","resumen":"Los investigadores midieron la actividad cerebral de personas mientras escuchaban relatos y la compararon con su capacidad de atención sostenida. Analizaron cómo cada cerebro representa el significado de la historia.","fuente":"biorxiv","fuenteNombre":"bioRxiv · preprints","color":"#be2628","autor":"Gao, S., Leong, Y. C., Rosenberg, M. D.","url":"https://www.biorxiv.org/content/10.64898/2026.10.21.760815v1?rss=1","imagen":"/hoy/portada/c90ce5921c5eb1e0","tema":"ciencia","subtemas":["neurociencia","atencion sostenida","comprension de relatos","modelos de lenguaje","fmri"],"entidades":["bioRxiv"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-22T00:00:00.000Z","indexTs":"2026-10-22T10:38:41.125Z","hash":"86f6c9a63a1dd619ec38d09f20d2d85285180bb98ec5316a9b62092e744e233e","tsa":{"time":"Oct 22 10:39:24 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"Hasta ahora se evaluaba qué tan bien el cerebro entiende un relato con un único número promedio para todo el grupo. Este trabajo muestra que la atención sostenida de cada persona cambia la forma en que se representa el significado, no sólo la cantidad. Para alguien que estudia o trabaja leyendo y escuchando mucho, esto sugiere que entender una historia depende de cómo cada uno sostiene la atención. Es un estudio con muestra limitada, así que conviene leerlo como una hipótesis con datos iniciales.","quienFirma":"bioRxiv (preprint, sin revisión por pares)","confianza":"preprint","consulta":null},"sello":{"hash":"86f6c9a63a1dd619ec38d09f20d2d85285180bb98ec5316a9b62092e744e233e","sello":"89a7c1edd4f453eced1c5f8d374408dc66dc57a786de0c6640be1786cc89ffec","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6574484,"aleatorio":"17f8dc6691055e17d3340945fc697b1d14385d774dc400926b289d0664c160fb","tiempo":"2026-10-22T10:39:00.000Z"},"nist":{"cadena":2,"pulso":1994441,"salida":"917B00588BBAF41DD8C461E7D93EA47DC73C00983776285722380061C2505D68D1C49D178A1E9E1A422EEA35DB6367141AB79828DD0F9592CE1805F752B02469","tiempo":"2026-10-22T10:32:00.000Z"},"noAntes":"2026-10-22T10:39:00.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 22 10:39:24 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"Individual Differences in Sustained Attention Tune Semantic Abstraction in Neural Encoding of Narratives","descripcion":"Neural encoding modeling for narrative comprehension -- using LLM embeddings to predict the temporal dynamics of neural activation -- is widely used to evaluate how well the brain represents certain semantic information. This approach, however, typically collapses semantic representation into a scalar fidelity score aggregated across participants, overlooking potentially rich individual differences and qualitative differences in naturalistic neural representations. In the current study, we addressed this gap by investigating how neural semantic encoding varies across individuals with sustained attention, and whether this difference is qualitative in addition to quantitative. Using fMRI data ","pubDate":"2026-10-22","url":"https://www.biorxiv.org/content/10.64898/2026.10.21.760815v1?rss=1"},"indexado":"2026-10-22T10:38:41.125Z"}}