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Coffee time: Low caffeine dose promotes attention and focus in zebrafish.
Ruiz-Oliveira, Julia; Silva, Priscila Fernandes; Luchiari, Ana Carolina.
Afiliação
  • Ruiz-Oliveira J; Department of Physiology and Behavior, Bioscience Center, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
  • Silva PF; Department of Biosciences, Swansea University, Swansea, UK.
  • Luchiari AC; Department of Physiology and Behavior, Bioscience Center, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil. analuchiari@yahoo.com.br.
Learn Behav ; 47(3): 227-233, 2019 09.
Article em En | MEDLINE | ID: mdl-30623296
In this study we investigated the ability of zebrafish to discriminate visual signs and associate them with a reward in an associative-learning protocol including distractors. Moreover, we studied the effects of caffeine on animal performance in the task. After being trained to associate a specific image pattern with a reward (food) in the presence of other, distractor images, the fish were challenged to locate the exact cue associated with the reward. The distractors were same-colored pattern images similar to the target. Both the target and distractors were continually moved around the tank. Fish were exposed to three caffeine concentrations for 14 days: 0 mg/L (control, n = 12), 10 mg/L (n = 14), and 50 mg/L (n = 14). Zebrafish spent most of the time close to the target (where the reward was offered) under the effects of 0 and 10 mg/L caffeine, and the shortest latency to reach the target was observed for the 10-mg/L caffeine group. Both caffeine treatments (10 and 50 mg/L) increased the average speed and distance traveled when compared to the control group. This study confirms previous results showing that zebrafish demonstrate conditioned learning ability; however, low-dose caffeine exposure seems to favor visual cue discrimination and to increase zebrafish performance in a multicue discrimination task, in which primarily focus and attention are required in order to obtain the reward.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Aprendizagem por Associação / Atenção / Peixe-Zebra / Cafeína / Antagonistas de Receptores Purinérgicos P1 Tipo de estudo: Guideline Limite: Animals Idioma: En Revista: Learn Behav Assunto da revista: CIENCIAS DO COMPORTAMENTO / MEDICINA VETERINARIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Aprendizagem por Associação / Atenção / Peixe-Zebra / Cafeína / Antagonistas de Receptores Purinérgicos P1 Tipo de estudo: Guideline Limite: Animals Idioma: En Revista: Learn Behav Assunto da revista: CIENCIAS DO COMPORTAMENTO / MEDICINA VETERINARIA Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos