Innate defensive behaviour and panic-like reactions evoked by rodents during aggressive encounters with Brazilian constrictor snakes in a complex labyrinth: behavioural validation of a new model to study affective and agonistic reactions in a prey versus predator paradigm - Guimarães-Costa, Raquel; Guimarães-Costa, Maria Beatriz; Pippa-Gadioli, Leonardo; Weltson, Alfredo; Ubiali, Walter Adriano; Paschoalin-Maurin, Tatiana; Felipotti, Tatiana Tocchini; Elias-Filho, Daoud Hibrahim; Laure, Carlos Júlio; Coimbra, Norberto Cysne (Journal of Neuroscience Methods, 2007)