Henri Bergson: Evolution,time and philosophy

Evolutionary theory is hindered by the conflict between the apparently antagonistic principles of its two founding figures, Darwin and Lamarck. Bergson's Creative Evolution outlines the means of transcending this impasse. If the evolutionary process is conceived as enduring then the atomistic model of static genetic states is never fully realisable. In the light of this, Bergson considers the germ‐plasm to be essentially “fluid.” If there is to be influence on the germ‐line it will be primarily in terms of the manner in which the genetic data is unfolded. In order to designate this influence Bergson introduces the concept of the “tendency.” The tendency will be explicated in relation to contemporary evolutionary biology. However, as the concept signifies that which is given only in the duration in which information is elaborated, it is precluded from representation. Bergson demonstrates that it is the evolutionary principle of continuous transformation which constitutes the limit to any scientific of view. For this reason, science needs to be complemented by a philosophical account of the duration of process.     

Effects of arachidonic acid on the spatial cognition of aged rats

Abstract:  To examine the effects of arachidonic acid (AA) on age-related cognitive deficits, Fischer 344 rats were given an AA-supplemented powder diet for 12 weeks from 18.6 months old as part of the old AA (OA) group. Other age-matched rats were fed a non-AA-supplemented powder diet as part of the old control (OC) group, and young rats were fed lab pellets as part of the young control (YC) group. When the aged rats reached 20.0 months old, all animals were tested for spontaneous activity in an open field, followed by the Morris water maze place and cue tasks. Escape latencies for the place task showed that the YC rats were fastest, and there was no difference between the OA and OC groups. However, the probe test and the first block of the cue task indicated that the OA rats remembered the location of an invisible platform better than the OC rats. Although the amount of hippocampal AA was larger in the OA rats than in the OC rats, the difference was not significant. The results showed that AA administration to aged animals may alleviate age-related deficits in spatial cognition.     

Recherche en santé et protection des données personnelles à l’heure du Règlement général relatif à la protection des données

France has a very rich legal framework, which defines the conditions of access and use of health data for scientific research purposes and ensures their protection. Currently, this legal framework is undergoing revision. The European regulation of April 27th 2016 on protection of natural persons in relation to the processing of personal data came into effect in EU member states since 25th May 2018 and substitute a rationale of administrative process for a rationale that empowers the researchers to document and prove compliance with the regulation (“accountability”). This regulation must be coordinated with the other regulation applicable to research in UE and with national law.     

Is Disclosure of Sexual Traumas Helpful? Comparing Experimental Laboratory Versus Field Study Results

Disclosing trauma is generally viewed as beneficial for survivors, yet few studies have used experimental methods to determine whether disclosure of sexual traumas in particular has positive effects. This article compares and contrasts knowledge based on lab studies of sexual trauma disclosure using Pennebaker's (1997 Pennebaker, J. W. 1997. Writing about emotional experiences as a therapeutic process. Psychological Science, 8: 162–166. [Crossref], [Web of Science ®] , [Google Scholar]) experimental disclosure paradigm with data from nonexperimental studies of sexual assault disclosure. The most surprising result was that unlike the majority of experimental trauma disclosure studies using Pennebaker's method that have typically shown positive effects of disclosure, both laboratory and field studies of sexual assault have not shown positive effects, particularly when victims receive negative responses from others. Future research on disclosure of sexual victimization should consider various mediators and moderators, which are suggested by existing findings, as well as a broader range of adjustment outcomes within an ecological framework.