{"id":71824,"date":"2018-03-09T23:16:34","date_gmt":"2018-03-09T23:16:34","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/actividad-neuronal-asociada-con-la-memoria-de-trabajo-y-la-toma-de-decisiones-en-la-corteza-prefrontal-del-mono-rhesus\/"},"modified":"2018-03-09T23:16:34","modified_gmt":"2018-03-09T23:16:34","slug":"actividad-neuronal-asociada-con-la-memoria-de-trabajo-y-la-toma-de-decisiones-en-la-corteza-prefrontal-del-mono-rhesus","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/actividad-neuronal-asociada-con-la-memoria-de-trabajo-y-la-toma-de-decisiones-en-la-corteza-prefrontal-del-mono-rhesus\/","title":{"rendered":"Actividad neuronal asociada con la memoria de trabajo y la toma de decisiones en la corteza prefrontal del mono rhesus."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Veronica N\u00e1cher Carda <\/strong><\/h2>\n<p>La corteza prefrontal (cpf) participa en la transformaci\u00f3n de la percepci\u00f3n en acci\u00f3n y para ello son necesarios procesos de memoria y toma de decisiones.Ambos procesos pueden llevarse a cabo utilizando informaci\u00f3n sensorial presente en el ambiente o almacenada a largo plazo.Sin embargo, se desconoce de manera electrofisiol\u00f3gica c\u00f3mo las representaciones internas se utilizan en las opreraciones cognitivas que gu\u00edan la conducta.Esta cuesti\u00f3n se ha investigado registrando la actividad de las neuronas de la cpf lateral mientras monos entrenados trabajan en una terea de discriminaci\u00f3n visual.La tarea requiere comparar un segundo est\u00edmulo (test)con la traza de memor\u00eda del primero (referencia)para decidir si el est\u00edmulo test est\u00e1 orientado a la derecha o a la izquierda de la referencia.En una versi\u00f3n de la tarea la referencia var\u00eda continuamente de ensayo a ensayo , en otra versi\u00f3n la referencia se mantiene fija y no se presenta, siendo necesario recuperar una presentaci\u00f3n interna almacenada a largo plazo.La misma neurona se registra en las dos versiones.Se ha encontrado que un grupo de neuronas de la cpf lateral modulan su tasa de descarga durante el intervalo entre est\u00edmulos en funci\u00f3n de la orientaci\u00f3n de la referencia, incluso cuando \u00e9sta no se presenta.Este resultado implica que las neuronas convierten la informaci\u00f3n sensorial almacenada a largo plazo en memoria de trabajo.Un segundo grupo de neuronas responde durante la presentaci\u00f3n del estimulo test y un tercer grupo responde antes de la respuesta motora, ambos grupos representan en su tasa de descarga la posici\u00f3n del est\u00edmulo test respecto a la referencia , que coincide con la decisi\u00f3n que toma el mono,y modulan su tasa de descarga en funci\u00f3n de la traza de memoria de la referencia.Se ha demostrado que la informaci\u00f3n de la referencia se utiliza para discriminar la posici\u00f3n del est\u00edmulo test, incluso cuando \u00e9sta no se ha presentado.Estos resultados indican q<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Actividad neuronal asociada con la memoria de trabajo y la toma de decisiones en la corteza prefrontal del mono rhesus.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Actividad neuronal asociada con la memoria de trabajo y la toma de decisiones en la corteza prefrontal del mono rhesus. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Veronica N\u00e1cher Carda <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Santiago de compostela<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 14\/12\/2004<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Carlos Acu\u00f1a Castroviejo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: carmen (secretario) Cavada Martinez <\/li>\n<li>ranulfo Romo trujillo (vocal)<\/li>\n<li>albert Compte braquets (vocal)<\/li>\n<li>  (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Veronica N\u00e1cher Carda La corteza prefrontal (cpf) participa en la transformaci\u00f3n de la percepci\u00f3n en acci\u00f3n y [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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