Your browser doesn't support javascript.
loading
Efectos de la predecibilidad en indefensión aprendida crónica / Predictability effects upon chronic learned helplessness
Yela Bernabé, José Ramón; Gómez Martínez, M. Ángeles; Salgado Ruiz, Alfonso.
Affiliation
  • Yela Bernabé, José Ramón; Universidad Pontificia de Salamanca. Salamanca. España
  • Gómez Martínez, M. Ángeles; Universidad Pontificia de Salamanca. Salamanca. España
  • Salgado Ruiz, Alfonso; Universidad Pontificia de Salamanca. Salamanca. España
Psicothema (Oviedo) ; 13(4): 592-597, nov. 2001. graf
Article in Es | IBECS | ID: ibc-14553
Responsible library: ES1.1
Localization: ES1.1 - BNCS
RESUMEN
Se administraron 9 sesiones de choques incontrolables a un grupo de 25 ratas Wistar, manipulando la predecibilidad. Recibían choques eléctricos incontrolables con señales de aviso antes del choque (EC-IN), después (IN-EC), antes y después (EC-IN-EC), sin señal (IN), o bien no recibían choques (Cont.). En una prueba controlable posterior los resultados indicaban que los sujetos que contaron con períodos de seguridad más amplios (grupo EC-IN) mostraban muy poco miedo condicionado y no perdían peso al final del estudio. Sin embargo todos los grupos sometidos a incontrolabilidad mostraban déficits en rendimiento (tiempo de latencia). Se discuten los resultados en términos de miedo condicionado, predecibilidad, hipótesis del feedback, y claves pavlovianas (AU)
ABSTRACT
25 albine rats were exposed to 9 sessions of uncontrollable shocks. Predictability was manipulated. Animals were randomly assigned to one of five groups that received uncontrollable shocks with a) a previous signal (CE-UN), b) a posterior signal (UN-CE), c) a previous and a posterior signal (CE-UN-CE), without signal (UN), or d) without uncontrollable shock (Cont.). In a subsequent controllable test, results indicated that the longer safety period group (CE-UN) showed low conditioned fear (immovilization); pretreatment-postreatment weight differences were not significant in this group. However, all uncontrollable shock groups showed performance deficits (latency time). Results are discussed in terms of conditioned fear, predictability, feedback hypothesis and pavlovian cues (AU)
Subject(s)
Search on Google
Collection: National databases / Spain Database: IBECS Main subject: Reflex / Fear / Imprinting, Psychological Type of study: Prognostic study / Risk factors Limits: Animals Language: Spanish Journal: Psicothema (Oviedo) Year: 2001 Document type: Article Institution/Affiliation country: Universidad Pontificia de Salamanca/España
Search on Google
Collection: National databases / Spain Database: IBECS Main subject: Reflex / Fear / Imprinting, Psychological Type of study: Prognostic study / Risk factors Limits: Animals Language: Spanish Journal: Psicothema (Oviedo) Year: 2001 Document type: Article Institution/Affiliation country: Universidad Pontificia de Salamanca/España
...