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García Pascual, Raquel

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0000-0001-8870-4544
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García Pascual
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  • Publicación
    Environmental enrichment accelerates the acquisition of schedule-induced drinking in rats
    (Elsevier, 2023-09-15) Fuentes Verdugo, Esmeralda; López Tolsa Gómez, Gabriela Eugenia; García Pascual, Raquel; Pellón Suárez de Puga, Ricardo
    Environmental enrichment (EE) provides an improvement in the housing conditions of experimental animals, such as laboratory rats, with greater physical and social stimulation through toys and company in the home cages. Its use is known to influence performance of experimental protocols, but these effects have not been well determined in the schedule-induced drinking (SID) procedure. The main goal of this study was to investigate the effects of EE on the acquisition of SID in 24 12-week-old male Wistar rats, divided into two groups, a group with EE housed with toys and companions, and a group without enrichment in individual housing conditions without toys (social isolation and no environmental enrichment, INEE). A total of 25 sessions, under a fixed time 30 s food reinforcement schedule and with access to water in the experimental chambers were carried out. Sessions lasted 30 min. The results showed that the EE group developed faster the excessive drinking pattern of SID, and drank to higher levels, than the INEE group. The greater development of SID in the EE group contradicts the view of schedule-induced behavior as linked to stress reduction and better suits with the conception of induction related to positive reinforcement.