Publications by authors named "R Pellon"
The development of schedule-induced drinking depends on different variables affecting the food delivered at the end of the interfood interval. There are mixed results concerning the effects of varying magnitude and/or preference of different reinforcers in the development of schedule-induced drinking, with some studies showing higher levels and other studies showing lower levels of drinking. The purpose of this study was to observe how differences in preference for a flavor of equally nutritious food pellets influence the development and maintenance of schedule-induced drinking.
View Article and Find Full Text PDFIncreased voluntary consumption of alcohol has been demonstrated in male rats exposed to frustrative reward downshift (the emotional self-medication effect). Access to a wheel for voluntary running abolished this effect in male rats, suggesting an attenuating effect of physical exercise on the negative affect induced by reward downshift and its consequences on drug intake. The present study analyzed this effect in female rats.
View Article and Find Full Text PDFArticle Synopsis
- A study was conducted to explore learning processes in bivalves, specifically using the slimy clam Ruditapes decussatus to examine habituation through a light stimulus.
- In Experiment 1, clams exposed to lower light intensity (350-lm) showed quicker habituation compared to those exposed to higher intensity (806-lm).
- The following experiments tested various trial lengths and intervals, revealing that longer trial durations with shorter rest periods led to faster habituation, while also highlighting a spontaneous recovery of responses and evidence of long-term habituation 24 hours later.
Rationale: Schedule-induced drinking (SID) reproduces an excessive and repetitive behavioural pattern that has led to propose this procedure as an animal model to study compulsive behaviours. Although it is known that cannabis can cause several adverse effects, in recent years there has been great interest in the medical application of cannabis derivatives for obsessive-compulsive related disorders.
Objectives: The present study investigated the effects of repeated THC administration on rates of previously acquired SID, as well as the possible alteration of its temporal distribution along inter-food intervals.
No evidence of association between inherited thrombophilia and increased risk of liver fibrosis.
United European Gastroenterol J
December 2023
Background: Preliminary evidence suggests that inherited hypercoagulable disorders can lead to an increased risk of significant liver fibrosis.
Objective: We aimed to investigate the prevalence of significant fibrosis in patients with inherited thrombophilia, assessed by using liver stiffness (LS), and to compare this prevalence to that found in a large population-based cohort from the same region.
Methods: This was a single-center, cross-sectional study.