作者: Ángeles DAmbros , Pablo Gómez , Alba Elisabeth Mustaca
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摘要: Las decepciones son parte de nuestra existencia y adaptarnos a ellas es fundamental para llevar una vida plena. Un modelo experimental que refleja este dolor psicologico la frustracion, consiste en disminuir sorpresivamente calidad o cantidad los reforzadores apetitivos situaciones aprendizaje. teorias mas aceptadas afirman frustracion provoca respuestas analogas presentacion estimulos aversivos: estres, ansiedad miedo. Los estresores fisicos producen hipoalgesia hiperalgesia, mediados por el sistema opioide u otros mecanismos. Presentaremos un experimento evalua efectos sobre percepcion del dolor ratas. Utilizamos procedimiento extincion consumatoria (Ec). Tiene dos fases: 1. Pre-cambio: animales consumen soluciones azucaradas al 32%, ensayos 5 min; 2. Post-cambio: no tienen disponible solucion (O%). Se compara tiempo contacto con bebedero controles ambas fases disponen 0%. evaluo latencia respuesta escape plancha caliente (hot-plate) inmediatamente despues primera segunda sesion postcambio. En esta ultima medida se hallaron diferencias entre grupos. Estos resultados apoyan hipotesis miedo = enunciada Gray. Resumen Ingles Deceptions are part of our lives, and how we deal with them is for health. A simple model that produces psychological pain frustration, which consists in the reduction an appetitive reinforcer expected quantity or quality. The most acceptable theories frustration state surprising reward downshifts provoke physiological, cognitive, emotional responses, similar to those triggered by aversive stimulus: e.g., stress, anxiety, fear. It well known some physical stressors induce hypoalgesia through opioid other mechanism. In present experiment, tested effects upon pain perception rats, using consummatory extinction procedure, consisted two phases. Pre-shift phase, animals received access 32% sucrose solution during 5-min sessions; Post-shift subjects did not any (0%). Experimentals´ goal-tracking behavior was compared control had reinforcers both Pain latency response hot-plate immediately after first, second post-shift sessions. Differences were found between groups this measure. Results do accord Gray´s fear hypothesis. Palabras Clave frustracion percepcion-del-dolor