{"id":15396,"date":"2014-09-22T05:49:05","date_gmt":"2014-09-22T10:19:05","guid":{"rendered":"https:\/\/seryhumano.com\/web\/?p=15396"},"modified":"2014-09-23T11:23:11","modified_gmt":"2014-09-23T15:53:11","slug":"el-eficiente-consumo-energetico-del-cerebro","status":"publish","type":"post","link":"https:\/\/seryhumano.com\/web\/?p=15396","title":{"rendered":"El eficiente consumo energ\u00e9tico del cerebro"},"content":{"rendered":"

A pesar de que todos sus parches evolutivos y sus continuos errores cognitivos, el cerebro no deja de mostrarnos cu\u00e1n extra\u00f1o y complejo llega a ser, a pesar de que solo pesa un kg y medio.\"cerebro<\/a><\/p>\n

Contiene cien mil millones de neuronas (15 veces la poblaci\u00f3n de la Tierra), y hasta diez veces m\u00e1s c\u00e9lulas gliales, que, hasta hace poco, se cre\u00eda que ten\u00edan una funci\u00f3n meramente de soporte de las neuronas. Sin embargo, las c\u00e9lulas gliales son importantes para la transmisi\u00f3n de los mensajes qu\u00edmicos, incluida la formaci\u00f3n de la memoria a largo plazo, y en los humanos son m\u00e1s numerosas que en cualquier otro organismo. En Albert Einstein tambi\u00e9n eran m\u00e1s numerosas que en la mayor\u00eda de humanos.<\/p>\n

Mediante las sinapsis, las neuronas entran en contacto entre s\u00ed, o tal y como formul\u00f3 el premio nobel Ram\u00f3n y Cajal, se dan la mano. Las neuronas, a su vez, est\u00e1n unidas por m\u00e1s de 100.000 km de fibras nerviosas.<\/p>\n

Consumo energ\u00e9tico<\/strong><\/p>\n

Pero lo m\u00e1s sorprendente de toda esta constelaci\u00f3n de c\u00e9lulas que nos permite pensar, e incluso creernos que somos un Yo, tiene un gasto de energ\u00eda tan eficiente que para s\u00ed lo quisieran muchos amantes de las energ\u00edas sostenibles: apenas en consumo energ\u00e9tico de una bombilla de quince vatios, tal y como explica Dick Swaab en su libro Somos nuestro cerebro<\/em>:\"cerebro<\/a><\/p>\n

\u201cEsto significa que el gasto total de energ\u00eda del cerebro de una persona a lo largo de una vida de unos ochenta a\u00f1os no supondr\u00eda m\u00e1s que 1.200 euros, (1.605 d\u00f3lares) seg\u00fan los precios vigentes, como ha calculado Michel Hofman. Por ese precio es imposible conseguir un ordenador con una vida \u00fatil tan larga. \u00a1Por 12 euros se puede suministrar energ\u00eda a mil millones de neuronas a lo largo de toda la vida! Una fant\u00e1stica y eficiente m\u00e1quina dotada de conexiones paralelas y, adem\u00e1s, mejor preparada para el procesamiento de im\u00e1genes y asociaciones que cualquier ordenador<\/em>.\u201d<\/p>\n

seryhumano.com<\/p>\n

Fuente: xatakaciencia.com<\/p>\n","protected":false},"excerpt":{"rendered":"

A pesar de que todos sus parches evolutivos y sus continuos errores cognitivos, el cerebro no deja de mostrarnos cu\u00e1n extra\u00f1o y complejo llega a ser, a pesar de que solo pesa un kg y medio. Contiene cien mil millones de neuronas (15 veces la poblaci\u00f3n de la Tierra), y hasta diez veces m\u00e1s c\u00e9lulas…<\/p>\n","protected":false},"author":2,"featured_media":15402,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[116],"tags":[111],"class_list":["post-15396","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ser-ecologico","tag-slider","category-116","description-off"],"yoast_head":"\nEl eficiente consumo energ\u00e9tico del cerebro<\/title>\n<meta name=\"description\" content=\"A pesar de que todos sus parches evolutivos y sus continuos errores cognitivos, el cerebro no deja de mostrarnos cu\u00e1n extra\u00f1o y complejo llega a ser, a pesar de que solo pesa un kg y medio.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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