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Evaluation of the development of delayed and non-delayed conditioned reinforcers in SHR rats

Grant number: 16/07077-7
Support type:Regular Research Grants
Duration: December 01, 2016 - November 30, 2018
Field of knowledge:Humanities - Psychology - Experimental Psychology
Principal researcher:Fábio Leyser Gonçalves
Grantee:Fábio Leyser Gonçalves
Home Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil


Attention Deficit Hyperactivity Disorder (ADHD) is a neuropsychiatric disorder defined by symptoms related to hyperactivity, impulsive behavior and deficit on sustained attention. Recent etiological theories have emphasized the role of changes in sensitivity to reinforcement on the comprehension of the symptoms of ADHD. The Spontaneous Hypertensive lineage of rats (SHR) have been suggested as a valid animal model of ADHD. Several theoretical models suggest impairment on the development of conditioned reinforcers on ADHD individuals. The general aim of this project is to compare the differences on the development process of conditioned reinforcers in SHR and Wistar Kyoto (WKY) rats. On Experiment 1, 8 SHR rats and 8 WKY rats will be submitted to a Multiple FI 2min-EXT 5min schedule of reinforcement with and without a response feedback light. On Experiment 2, 8 SHR and 8 WKY rats will be submitted to a conditioned reinforcement procedure with 0s and 30s delays between the stimulus (lights-off) and the reinforcer presentation (food pellet), in an ABA design. (AU)

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