Publicado May 18, 2017



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Javier Leonardo Rico

Camilo Hurtado-Parrado

Juan Vásquez-Sepúlveda

Juan Fonseca

Ángelo Cardona

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Resumen

Impulsivity-related measures have been obtained using operant conditioning tasks. Although it has been suggested that impulsivity indices can also be obtained using the elevated plus-maze (EPM), an anxiety-related animal test, no studies have examined the relationship between anxiety-related variables in EPM and impulsivity-related indices obtained during operant conditioning. Correlations between EPM measures and performance in a 60-s fixed-interval schedule of reinforcement (FI 60s) were established in this study. Twenty-four female rats were exposed to the EPM before starting training in the FI 60-s schedule. A positive correlation was found between the percentage of time spent in the central area of the EPM and both the FI efficiency index and the inter-response times. In addition, these three measures were positively correlated within Factor 1 of a factor analysis. No correlations were observed between open-arms measures in EPM and operant performance. These results suggest that time in the central area of the EPM may be a useful index of impulsivity in rodents without a pre-determined trait of impulsivity.

Keywords

Anxiety, elevated plus-maze, impulsivity, operant conditioning, rats.Ansiedad, condicionamiento operante, impulsividad, laberinto en cruz elevado, ratas

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Cómo citar
Rico, J. L., Hurtado-Parrado, C., Vásquez-Sepúlveda, J., Fonseca, J., & Cardona, Ángelo. (2017). Time in the central area of the elevated plusmaze correlates with impulsivity-related measures during an operant task. Universitas Psychologica, 15(5). https://doi.org/10.11144/Javeriana.upsy15-5.tcae
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