Autodiscriminación condicional del día y noche subjetivos en ratas Wistar y Sprague-Dawley

Paris Barbachano Montero, Julio C. Penagos-Corzo, Andres M. Pérez Acosta


La autodiscriminación condicional se define como un tipo de control de estímulos en el que el estímulo discriminativo es algún aspecto del mismo individuo, posteriormente asociado de forma condicionada a estímulos arbitrarios. Esta capacidad no es exclusivamente humana, ni verbal. En este estudio se exploró la autodiscriminación condicional del día y la noche subjetivos en ratas de las cepas Wistar y Sprague-Dawley. Para este propósito se diseñó un experimento en el que el estímulo discriminativo fue el estado interno natural del sujeto respecto al día y la noche. Se encontró que ambas cepas son capaces de discriminar la noche subjetiva, mas no el día subjetivo. No se encontraron diferencias significativas entre las cepas. Se discuten los resultados principalmente en términos de la naturaleza nocturna de las ratas y de la dificultad de la tarea.

Palabras clave: Autodiscriminación Condicional, Día/Noche Subjetivos, Ritmos Circadianos, Ratas, Sprague-Dawley, Wistar.}

Conditional self-discrimination of the subjective night and day in Wistar and Sprague-Dawley rats. Conditional self-discrimination is defined as a type of stimulus control in which discriminative stimulus is some aspect of the same individual, subsequently associated with an arbitrary stimulus. This capacity is neither exclusively human nor exclusively verbal. In this study, conditional self-discrimination of subjective day/night was explored in Sprague-Dawley and Wistar rats. For this purpose, one experiment was designed in which discriminative stimulus was the natural internal state of the organism with respect to day and night. It was found that both strains are able to discriminate subjective night but not subjective day. No significant differences were found between the strains. Results are discussed mainly in terms of the nocturnal nature of rats and the difficulty of the task.

Keywords: Conditional Self-discrimination, Subjective Day/Night, Circadian Rhythms, Rats, Sprague-Dawley, Wistar.

Palabras clave

autodiscriminación condicional, día/noche subjetivos, ritmos circadianos, ratas, Sprague-Dawley, Wistar

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