Keywords
elevated plus-maze
impulsivity
operant conditioning
rats.
How to Cite
Abstract
Medidas relacionadas a impulsividad se han obtenido mediante tareas de condicionamiento operante. Aunque se ha sugerido que índices de impulsividad pueden ser también obtenidos usando el laberinto en cruz elevado (LCE), una prueba animal relacionada con ansiedad, ningún estudio ha examinado la relación entre las variables de ansiedad en el LCE e índices de impulsividad obtenidos durante condicionamiento operante. En este estudio se establecieron correlaciones entre medidas del LCE y el desempeño en un programa de reforzamiento de intervalo fijo 60-s (IF 60-s). Diecisiete ratas hembras fueron expuestas la LCE antes de iniciar el entrenamiento en el programa de IF 60-s. Se encontró una correlación positiva entre el porcentaje de tiempo de permanencia en el área central del LCE y tanto el índice de eficiencia como los tiempos entre respuestas en IF. Adicionalmente, estas tres medidas correlacionaron de forma positiva dentro del Factor 1 del análisis factorial. No se observaron correlaciones entre las medidas de los brazos abiertos del LCE y la ejecución operante. Los resultados sugieren que el tiempo en el área central del LCE podría ser un índice útil de impulsividad en roedores sin un perfil predeterminado de impulsividad.
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