Technologies émergentes et transformations digitales de l’activité : enjeux pour l’activité et la santé au travail

The question of the introduction of emerging technologies and their incessant renewal in organizations basically refers to the place and role that these devices play in activity, as well as how they can affect activity and health at work … Thought as a prospective reflection trying to grasp the logic and the modalities of the digital transformations in progress, the ambition of this paper is: (i) first, identify and characterize the emerging technologies that are deployed in the company; (ii) discuss their impact on the activity and well-being of employees, showing the uses and paradoxical effects that these devices can have on work; and (iii) finally think about the psychosocial function of these devices as potential health and business development operators.     

Facteurs prédictifs de l’engagement parental dans l’accompagnement aux devoirs et leçons des adolescents : une étude comparative France–Québec

This comparative study France–Quebec.⁷ aims at identifying predictive factors of secondary students’ parental involvement in homework and compares the two populations. Sociodemographic and psychological variables were retained in relation to parental beliefs regarding homework. Exactly 230 French parents and 344 Quebecois parents filled in a same questionnaire. The main results obtained through regression analyses reveal the importance of parental role construction and parental self-efficacy in the prediction of parental involvement in homework in France and in Québec.     

Vasopressin/oxytocin-related peptides influence long-term memory of a passive avoidance task in the cuttlefish,Sepia officinalis

The vasopressin (VP)/oxytocin (OT)-related peptides constitute a large superfamily found in a wide range of both vertebrate and invertebrate species. While intensive literature reports that these neuropeptides influence behavior, especially learning and memory, in numerous species from diverse vertebrate groups, their roles in behavioral regulation have never been studied in invertebrates. Here, we investigated the role of two VP/OT superfamily peptides, octopressin (OP) and cephalotocin (CT), on long-term memory (LTM) formation of a passive avoidance task in a cephalopod mollusc, the cuttlefish, Sepia officinalis. Subadult cuttlefish were intravenously injected, in a dose range of 3–60 μg/kg, 1 h after the training phase (consolidation design); retention performance was tested 24 h post-training. We found that administration of OP at low dose (3 μg/kg) enhanced LTM, whereas a dose of 60 μg/kg attenuated it. No effect of OP on LTM was observed for the 15 μg/kg dose. Conversely, an enhancement of retention performance was observed at all doses of CT tested. This study is the first to demonstrate the behavioral effects of VP/OT superfamily peptides in an invertebrate species. The valuable role of VP/OT-like peptides on memory processes offers new evolutionary perspectives on peptidergic transmission and neuromodulation.     

Enriched housing reverses age-associated impairment of cognitive functions and tPA-dependent maturation of BDNF

Although tissue type plasminogen activator (tPA) and brain derived neurotrophic factor (BDNF) have been extensively described to influence brain outcomes in a number of disorders, their roles during physiological aging are poorly investigated. In the present study, we investigated whether maintenance of mice in different environmental conditions could influence age-associated changes in hippocampal tPA expression and BDNF maturation in relation with modifications of their cognitive performances. Our data indicate that maintenance in enriched housing led to a reversal of age-associated decrease in expression of hippocampal tPA. A subsequent increase in the level of mature BDNF and an improvement in emotional and spatial memories were observed. Taken together, these data suggest that the tPA–BDNF axis could play a critical role in the control of cognitive functions influenced both by the age and housing conditions.