scholarly journals Training level reveals a dynamic dialogue between stress and memory systems in birds

2021 ◽  
Author(s):  
Flore Lormant ◽  
Vitor Hugo Bessa Ferreira ◽  
Julie Lemarchand ◽  
Fabien Cornilleau ◽  
Paul Constantin ◽  
...  

AbstractIt is now well-accepted that memory is a dynamic process, and that stress and training level may influence which memory system an individual engages when solving a task. In this work, we investigated whether and how chronic stress impacts spatial and cue-based memories according to training level. To that aim, control and chronically stressed Japanese quail were trained in a task that could be solved using spatial and cue-based memory and tested for their memory performances after 5 and 15 training days (initial training and overtraining, respectively) and following an emotional challenge (exposure to an open field). While chronic stress negatively impacted spatial memory in chronically stressed birds after initial training, this impact was lowered after overtraining compared to control quail. Interestingly, the emotional challenge reinstated the differences in performance between the two groups, revealing that chronic stress/overtraining did not eliminate spatial memory. Differences caused by previous stressors can re-emerge depending on the more immediate psychological state of the individual. Contrary to spatial memory, cue-based memory was not impaired in any test occasion, confirming that this form of memory is resistant to chronic stress. Altogether these findings reveal a dynamic dialogue between stress, training, and memory systems in birds.

2014 ◽  
Vol 10 (1) ◽  
pp. 63-71 ◽  
Author(s):  
J. Fortier ◽  
V. Julliand ◽  
P. Harris ◽  
A.G. Goachet

This study aimed to characterise the training practices of French trainers and to describe the training load undertaken by unqualified (UT) and qualified Standardbred trotters (QT). During the Paris-Vincennes 2012 meeting, 20 trainers from the Grosbois training centre were surveyed. Details of their general training practices as well as the weekly workloads for UT and QT were obtained. A nonparametric Mann-Whitney test was used to compare the UT and QT data and a principal component analysis (PCA) was carried out to examine links between trainer characteristics and particular training practices. Four main exercises used to train trotters were identified: (1) ‘promenade’ exercise: light exercise at walk and at slow trot (5.1±0.4 m/s) lasting 48±9 min; (2) ‘jogging’: moderate trot exercise (6.9±1.5 m/s) lasting 44±12 min; (3) ‘parcours’ exercise: moderate/high intensity trot session (10.3±0.9 m/s) over 2,844±1,412 meters with a final sprint; (4) ‘interval’ type exercise: fast trot sessions (10.8±0.9 m/s) over 1,010±212 meters with sprint phases. Trainers used a combination of these four exercises to train both UT and QT. Moreover, the estimated training weekly workload did not appear to differ between the two age categories, with apparently similar exercises and training loads being used to train both UT and QT. The results of the PCA suggested that as trainers become older and more successful they tend to change the composition of exercises used. They preferably used more ‘jogging’ type exercise, regardless of the horses’ age or training level. Whilst the weekly training plan varied between trainers, it seems that the individual trainer's annual programme was relatively constant, consisting of a repetition of a typical training week.


2020 ◽  
Vol 22 (11) ◽  
pp. 11-15
Author(s):  
Gan N.Yu. ◽  
Ponomareva L.I. ◽  
Obukhova K.A.

Today, worldview, spiritual and moral problems that have always been reflected in education and upbringing come to the fore in society. In this situation, there is a demand for philosophical categories. One of the priority goals of education in modern conditions is the formation of a reasonable, reflexive person who is able to analyze their actions and the actions of other people. Modern science is characterized by an understanding of the absolute value and significance of childhood in the development of the individual, which implies the need for its multilateral study. In the conditions of democratization of all spheres of life, the child ceases to be a passive object of education and training, and becomes an active carrier of their own meanings of being and the subject of world creation. One of the realities of childhood is philosophizing, so it is extremely timely to address the identification of its place and role in the world of childhood. Children's philosophizing is extremely poorly studied, although the need for its analysis is becoming more obvious. Children's philosophizing is one of the forms of philosophical reflection, which has its own qualitative specificity, on the one hand, and commonality with all other forms of philosophizing, on the other. The social relevance of the proposed research lies in the fact that children's philosophizing can be considered as an intellectual indicator of a child's socialization, since the process of reflection involves the adoption and development of culture. Modern society, in contrast to the traditional one, is ready to "accept" a philosophizing child, which means that it is necessary to determine the main characteristics and conditions of children's philosophizing.


2002 ◽  
Vol 17 (3) ◽  
pp. 177-181 ◽  
Author(s):  
Zahi Ben-Aroya ◽  
David Segal ◽  
Amnon Hadar ◽  
Mordechai Hallak ◽  
Michael Friger ◽  
...  

2018 ◽  
Vol 115 (43) ◽  
pp. E10187-E10196 ◽  
Author(s):  
Michael A. van der Kooij ◽  
Tanja Jene ◽  
Giulia Treccani ◽  
Isabelle Miederer ◽  
Annika Hasch ◽  
...  

Stringent glucose demands render the brain susceptible to disturbances in the supply of this main source of energy, and chronic stress may constitute such a disruption. However, whether stress-associated cognitive impairments may arise from disturbed glucose regulation remains unclear. Here we show that chronic social defeat (CSD) stress in adult male mice induces hyperglycemia and directly affects spatial memory performance. Stressed mice developed hyperglycemia and impaired glucose metabolism peripherally as well as in the brain (demonstrated by PET and induced metabolic bioluminescence imaging), which was accompanied by hippocampus-related spatial memory impairments. Importantly, the cognitive and metabolic phenotype pertained to a subset of stressed mice and could be linked to early hyperglycemia 2 days post-CSD. Based on this criterion, ∼40% of the stressed mice had a high-glucose (glucose >150 mg/dL), stress-susceptible phenotype. The relevance of this biomarker emerges from the effects of the glucose-lowering sodium glucose cotransporter 2 inhibitor empagliflozin, because upon dietary treatment, mice identified as having high glucose demonstrated restored spatial memory and normalized glucose metabolism. Conversely, reducing glucose levels by empagliflozin in mice that did not display stress-induced hyperglycemia (resilient mice) impaired their default-intact spatial memory performance. We conclude that hyperglycemia developing early after chronic stress threatens long-term glucose homeostasis and causes spatial memory dysfunction. Our findings may explain the comorbidity between stress-related and metabolic disorders, such as depression and diabetes, and suggest that cognitive impairments in both types of disorders could originate from excessive cerebral glucose accumulation.


2019 ◽  
Vol 33 (3) ◽  
pp. 410-438 ◽  
Author(s):  
Margarita Torre

The number of women occupying male-dominated blue-collar jobs continues to be very low. This study examines segregation in the blue-collar trades, taking into consideration both structural and individual factors. Using nationally representative data for 25 countries, the study shows that segregation in the blue-collar sector does not vary with the strength of vocational education and training programs. At the individual level, findings reveal higher degrees of social reproduction among working-class families, but parental background alone does not fully account for the gender composition of the sector in which children end up working. Overall, the findings point to the existence of a socializing mechanism that entrenches horizontal segregation in the blue-collar sector. The study indicates that to reduce segregation in the blue-collar fields, policies must address this prior mechanism, both at the structural and individual level.


2017 ◽  
Vol 13 (16) ◽  
pp. 113
Author(s):  
Youssef Nafidi ◽  
Anouar Alami ◽  
Moncef Zaki ◽  
Hanane Afkar ◽  
Mohammed Elazami Elhassani

In light of empirical experience from Morocco, combined with new possibilities afforded by Information and Communication Technology (ICT), there is a wish to integrate new technologies into distance education to help solve a set of problems identified in the initial training at the Regional Centre for the Professions of Education and Training of Fez-Meknes. The results of a study conducted among 15 trainee teachers of the Earth and Life Sciences allow us to conclude that designing a hypermedia tool for learning could constitute a promising solution to address the many challenges linked to the initial training of teachers in Morocco. Finally, the use of this digital resource by trainee teachers’ has also strongly contributed to their eagerness to integrate ICT in their subsequent teaching practices.


Author(s):  
N. K. Korneev ◽  

The state and behavior of a singer on the stage has not been fully explored and studied. This article is an attempt to understand the causes of such a phenomenon as the excitement of a vocalist who goes on stage and performs in front of an audience. The unusual psychological state that an artist develops on the stage during a public performance brings many unexpected «discoveries» to the performer and requires detailed study. Unlike ordinary excitement, the author designated it as «stage excitement» and pointed out the factors that lead to the occurrence of such a state. The ways of neutralizing the negative sides of the artist’s state on the stage are analyzed. A great emphasis in the work is placed on the study of the psychological portrait of the performer and the psycho-emotional component of his personality as well as the characteristic moments associated with the individual characteristics of the vocalist.


2018 ◽  
Vol 4 (3) ◽  
pp. 1
Author(s):  
Álvaro Romero ◽  
Blasa Maria Villena ◽  
Maria de las Nieves González ◽  
María Segarra ◽  
Ángel Rodríguez

ResumenEsta investigación analiza las etapas formativas en materia de prevención en las Pequeñas y Medianas Empresas (PYMES) del Sector Construcción en España, partiendo del indicador relativo a la elevada siniestralidad del Sector frente al resto de sectores productivos, para a través de los cuestionarios diseñados ex professo y las bases de datos de diversos organismos consultados, como los Servicios de Prevención Ajenos (SPAs) y la Fundación Laboral de la Construcción (FLC), observar la posible solución a esta casuística tan funesta. Se analizó la cualificación profesional de los docentes, las metodologías formativas empleadas y la formación e información que recibe el trabajador sobre su puesto de trabajo. Los resultados muestran el escaso nivel educativo y formativo de los trabajadores, y la baja especialización de los docentes que imparten la formación. Tanto el Sector como sus trabajadores demandan una necesaria profesionalización de los procesos que les permitan ser más competitivos.AbstractThis paper analyzes all the preventive-training stages in Small and Medium Enterprises (SMEs) that belong to the Spanish Construction Sector. One of the stages analyzed deals with the fatal consequence of incidence rate in Construction Sector compared to other productive sectors. To do that, a survey was made to evaluate the qualifications of the technicians in External Prevention Services (EPS) and in the Construction Labor Foundation (CLF), by looking at the possible solution to this problem. In order to execute the analysis, the qualifications of the trainers, the training methodologies used and the training and information received by the workers on their workplace were examined. The results show the deficient educational and training level of the workers, as well as the low specialization of the trainers who provide training actions. Both the Construction Sector and its workers demand a necessary professionalization of the processes to be more competitive and efficient


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