Environmental Enrichment Differentially Activates Neural Circuits in FVB/N Mice, Inducing Social Interaction in Females but Agonistic Behavior in Males

Author(s):  
Edith Araceli Cabrera-Muñoz ◽  
Sandra Olvera-Hernández ◽  
Nelly Maritza Vega-Rivera ◽  
David Meneses-San Juan ◽  
Daniel Reyes-Haro ◽  
...  
2019 ◽  
Vol 27 (4) ◽  
pp. 277-282
Author(s):  
Roberto E Mercadillo ◽  
Ricardo Mosco-Aquino ◽  
Nayeli Páez-Martínez

Inhalant abuse is a global issue with major behavioral, cognitive, and social consequences. Some effects of this abuse are observed in memory deficits, but the organism–environment interactions are poorly understood. We propose that studying environmental enrichment (EE) in animal models allows the elucidation of adaptive behavior mechanisms to face harmful effects, as well as plausible translational interventions; however, the effects of the different elements that comprise the complexity of EE must be determined. In this work, we measured the effects of housing under five environments for 4 weeks on memory impairments induced by the repeated administration of toluene in mice (4000 ppm, 30 min/day for 4 weeks). Recognition memory was recovered after housing in a complete enriched environment involving voluntary exercise with running wheels, cognitive stimulation with objects to explore, and social interaction. However, enrichment with only voluntary exercise in social conditions produced a significant memory recovery. In addition, EE in isolation showed fewer beneficial effects, while cognitive stimulation, even under social conditions, did not reverse the memory impairment by itself. We argue that physical exercise and social interaction could derive in cognitive enhancement and be used to advise on psychosocial interventions.


IBRO Reports ◽  
2019 ◽  
Vol 6 ◽  
pp. S329
Author(s):  
Laura Herrera-Isaza ◽  
Karen Corredor ◽  
Fernando Cardenas ◽  
Santiago Zarate ◽  
Angela Gomez

1998 ◽  
Vol 32 (4) ◽  
pp. 427-433 ◽  
Author(s):  
A. Ely ◽  
A. Freer ◽  
C. Windle ◽  
R. M. Ridley

The way in which breeding families of laboratory-born marmosets used the space provided by their cages, and a small protruding 'veranda', was assessed in order to determine the popularity of the veranda as a form of environmental enrichment, and the extent to which the marmosets confined themselves to only part of the cage. The veranda was found to be of enduring interest to the marmosets whose occupancy of this space was an order of magnitude greater than the rest of the cage. The upper part of the cage was preferred to the bottom half. This preference was greater in larger cages and decreased when larger cages were temporarily reduced in size. It is unlikely, however, that the distribution of the occupancy of different parts of the cage resulted primarily from a fear of people in the holding room. The veranda, which was the most preferred place in the cage, was the nearest part of the cage to people in the room. Occupancy of the lower part of the cage increased when human observers sat on the floor, suggesting that some of the marmosets' behaviour comprised approaching, rather than avoiding, the observers, possibly for reasons of curiosity and social interaction.


2015 ◽  
Vol 115 (2) ◽  
pp. 40 ◽  
Author(s):  
Karlie Ledergerber ◽  
Benjamin Bennett ◽  
Nicole Diefenbacher ◽  
Crystal Shilling ◽  
Brian D Whitaker

This study was conducted to, 1) determine the effects of socializing piglets prior to weaning on piglet behavior and performance and sow behavior, and 2) determine the effects of socializing piglets prior to weaning and inclusion of pen enrichment on nursery pig behavior and performance. Socialized piglets spent a shorter amount of time lying down during the first 24 hours following barrier removal compared to all other times and exhibited an increase in agonistic behavior. Sows had higher levels of cortisol and spent less time lying down during the first 48 hours after piglet socialization compared to all other times. In the nursery, piglets that were socialized prior to weaning had higher average daily gain (ADG) (0.48 ± 0.02 kg) and lower occurrence of agonistic behavior (30.0 ± 2.5 percent) during the first six hours after weaning compared to those piglets that were not socialized prior to weaning (0.39 ± 0.03 kg and 85.0 ± 3.5 percent, respectively). Pens with environmental enrichment contained fewer piglets displaying agonistic behavior compared to pens without environmental enrichment during the first 12 hours after weaning. The results of this study suggest that socializing piglets from different litters prior to weaning leads to temporary stress in lactating sows and an increase in agonistic behavior in piglets, but improves their performance after weaning. Inclusion of environmental enrichment in the nursery is an effective means to reduce agonistic behavior between piglets.


2019 ◽  
Author(s):  
Jamilla Akhund-Zade ◽  
Sandra Ho ◽  
Chelsea O’Leary ◽  
Benjamin de Bivort

AbstractNon-genetic individuality in behavior, also termed intragenotypic variability, has been observed across many different organisms. A potential cause of intragenotypic variability is sensitivity to minute environmental differences during development, even as major environmental parameters are kept constant. Animal enrichment paradigms often include the addition of environmental diversity, whether in the form of social interaction, novel objects, or exploratory opportunities. Enrichment could plausibly affect intragenotypic variability in opposing ways: it could cause an increase in variability due to the increase in microenvironmental variation, or a decrease in variability due to elimination of aberrant behavior as animals are taken out of impoverished laboratory conditions. In order to test our hypothesis, we assayed five isogenic Drosophila melanogaster lines raised in control and mild enrichment conditions, and one isogenic line under both mild and intense enrichment conditions. We compared the mean and variability of six behavioral metrics between our enriched fly populations and the laboratory housing control. We found that enrichment often caused a small increase in variability across most of our behaviors, but that the ultimate effect of enrichment on both behavioral means and variabilities was highly dependent on genotype and its interaction with the particular enrichment treatment. Our results support previous work on enrichment that presents a highly variable picture of its effects on both behavior and physiology.


2018 ◽  
Author(s):  
Dulcie A Vousden ◽  
Alexander Friesen ◽  
Xianglan Wen ◽  
Lily R Qiu ◽  
Nicholas O’Toole ◽  
...  

1AbstractHuman MRI studies show that experience can lead to changes in the volume of task-specific brain regions; however, the behavioural and molecular processes driving these changes remain poorly understood. Here, we used in-vivo mouse MRI and RNA sequencing to investigate the neuroanatomical and transcriptional changes induced by environmental enrichment, exercise, and social interaction. Additionally, we asked whether the volume changes require CREB, a transcription factor critical for memory formation and neuronal plasticity. Enrichment rapidly increased cortical and hippocampal volume, and these effects were not attributable to exercise or social interaction. Instead, they likely arise from learning and sensorimotor experience. Nevertheless, the volume changes were not attenuated in mice with memory impairments caused by loss of CREB, indicating that these effects are driven by processes distinct from this canonical learning and memory pathway. Finally, within brain regions that underwent volume changes, enrichment increased the expression of genes associated with axonogenesis, dendritic spine development, synapse structural plasticity, and neurogenesis, suggesting these processes underlie the volume changes detected with MRI.


2021 ◽  
Vol 9 (A) ◽  
pp. 78-81
Author(s):  
Amel Yanis ◽  
Yanwirasti Yanwirasti ◽  
Nurmiati Amir ◽  
Ekowati Handharyani

AIM: The aim of this study was to investigate the effect of environmental enrichment with autistic-like behavior symptoms on a Rattus norvegicus model. METHODS: The post-test control only group design is used in this study. The study sample is baby of Rattus norvegicus Sprague Dawley strain who were born to cows who gave birth for the 1st time and children from cows who had been injected with valproic acid (VPA) who gave birth for the 1st time. This study has been divided into three groups, namely, negative control, positive control, and intervention: the negative control group; the VPA without enrichment as positive control; and the VPA group with enrichment as intervention group. One-way ANOVA tests were used to data analysis. Data are processed using SPSS version 23.0. RESULTS: This study showed that the mean of social interaction in the negative control group was 359.11 ± 39.33 s higher than the positive control, namely, 182.00 ± 35.80 s and 244.56 ± 19.06 s for intervention. The mean of repetitive movement in the negative control group was 48.00 ± 9.03 s lower than the positive control, namely, 212.11 ± 41.43 s and intervention 160.00 ± 18.91 s. There has been an influence of environmental enrichment with social interaction and repetitive movements on a Rattus norvegicus model (p < 0.05). CONCLUSION: This study confirmed that there has been an influence of environmental enrichment with social interaction and repetitive movements on a Rattus norvegicus model.


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