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

Conditional self-discrimination is defined as a type of stimulus control in which the discriminative stimulus is some aspect of the individual himself, subsequently conditionally associated with arbitrary stimuli. This ability is not exclusively human, nor verbal. In this study we explored the conditional self-discrimination of subjective day and night in Wistar and Sprague-Dawley rats. For this purpose, an experiment was designed in which the discriminative stimulus was the subject's natural internal state 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. The results are discussed mainly in terms of the nocturnal nature of the rats and the difficulty of the task.