{"ok":true,"nota":{"id":"b6c19b5016a2cb7f","slug":"una-arana-saltarina-tiene-dos-etapas-de-sueno-una-parecida-al-rem-de-l-b6c19b","titulo":"Una araña saltarina tiene dos etapas de sueño, una parecida al REM de los humanos","resumen":"Investigadores de la Universidad de Bonn observaron el sueño de la araña saltarina Portia fimbriata. Encontraron dos etapas distintas, una de ellas con movimientos parecidos al sueño REM de los vertebrados. El trabajo fue publicado en PNAS.","fuente":"phys","fuenteNombre":"Phys.org","color":"#2b5c8a","autor":"","url":"https://phys.org/news/2026-10-distinct-stages-emerge-spider-rem.html","imagen":"https://scx1.b-cdn.net/csz/news/tmb/2026/how-deeply-do-spiders-2.jpg","tema":"ciencia","subtemas":["sueño","neurociencia","arañas","comportamiento animal","evolución"],"entidades":["Universidad de Bonn","Portia fimbriata","Proceedings of the National Academy of Sciences"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-26T19:00:17.000Z","indexTs":"2026-10-26T19:01:50.282Z","hash":"608feb3af2b206cc3fb9b91242196db7d0e7f6df84d52d81341b0e1b5c29b94f","tsa":{"time":"Oct 26 19:02:09 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"motor","registro":"hallazgo","porQueImporta":"Hasta hace poco se pensaba que el sueño con movimientos rápidos era exclusivo de los mamíferos y las aves. Que una araña con un cerebro minúsculo lo tenga sugiere que esta necesidad es mucho más antigua de lo que creíamos. Para cualquiera que duerma mal, es un recordatorio de que el descanso no es un lujo sino algo que la naturaleza protegió durante millones de años. Entonces, ¿qué tan poco entendemos todavía de lo que hacemos cuando cerramos los ojos?","quienFirma":"Universidad de Bonn","confianza":"revisado","consulta":{"pregunta":"¿Te sorprende que una araña tenga fases de sueño?"}},"sello":{"hash":"608feb3af2b206cc3fb9b91242196db7d0e7f6df84d52d81341b0e1b5c29b94f","sello":"93b444c142d423e606383c0cf976f122e563f14e28a641cbae6124bf126e4a66","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6587009,"aleatorio":"23b362725aeaca5851c52ed6529ccca1274cd06dcb6d81e7d8ce185f306c6863","tiempo":"2026-10-26T19:01:30.000Z"},"nist":{"cadena":2,"pulso":2000698,"salida":"24660F20A84BC071709740F36EB340F3938F6863E62203C59CAC90EE446E1AA36E43EB8CD82434E8277223C7AAAB3FE836C4C7070C20C07134153FC500738A3A","tiempo":"2026-10-26T19:01:00.000Z"},"noAntes":"2026-10-26T19:01:30.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 26 19:02:09 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"Two distinct sleep stages emerge in jumping spider, including a REM-like state","descripcion":"Humans and other vertebrates go through various stages of sleep, including REM (rapid eye movement) sleep characterized by rapid eye movements and muscle twitches. Can a similar sleep state be observed in spiders? Researchers from the Institute of Organismic Biology at the University of Bonn investigated this in the Australian jumping spider Portia fimbriata. The work is published in the journal Proceedings of the National Academy of Sciences.","pubDate":"Mon, 26 Oct 2026 15:00:17 EDT","url":"https://phys.org/news/2026-10-distinct-stages-emerge-spider-rem.html"},"indexado":"2026-10-26T19:01:50.282Z"}}