Lorblanchet, M.: "La grotte ornéee de Pergouset (Saint-Géry, Lot), un sanctuaire secret paléolithique" , ed. de la Maison des Sciences de l"Homme, París 2001

El treball que ens presenta el prestigiós especialista en art paleolític Michel Lorblanchet és el fruit de deu anys de feina en una petita cova amb gravats de la zona de la vall del Lot, ben a prop de la famosa cova amb pintures de Pech-Merle.

Training in hypoxia fails to further enhance endurance performance and lactate clearance in well-trained men and impairs glucose metabolism during prolonged exercise.

The aim of this study was to investigate the synergistic effects of endurance training and hypoxia on endurance performance in normoxic and hypoxic conditions (approximately 3000 m above sea level) as well as on lactate and glucose metabolism during prolonged exercise. For this purpose, 14 well-trained cyclists performed 12 training sessions in conditions of normobaric hypoxia (HYP group, n = 7) or normoxia (NOR group, n = 7) over 4 weeks. Before and after training, lactate and glucose turnover rates were measured by infusion of exogenous lactate and stable isotope tracers. Endurance performance was assessed during incremental tests performed in normoxia and hypoxia and a 40 km time trial performed in normoxia. After training, performance was similarly and significantly improved in the NOR and HYP groups (training, P < 0.001) in normoxic conditions. No further effect of hypoxic training was found on markers of endurance performance in hypoxia (training x hypoxia interaction, n.s.). In addition, training and hypoxia had no significant effect on lactate turnover rate. In contrast, there was a significant interaction of training and hypoxia (P < 0.05) on glucose metabolism, as follows: plasma insulin and glucose concentrations were significantly increased; glucose metabolic clearance rate was decreased; and the insulin to glucagon ratio was increased after training in the HYP group. In conclusion, our results show that, compared with training in normoxia, training in hypoxia has no further effect on endurance performance in both normoxic and hypoxic conditions or on lactate metabolic clearance rate. Additionally, these findings suggest that training in hypoxia impairs blood glucose regulation in endurance-trained subjects during exercise.

Spatial relational learning and memory abilities do not differ between men and women in a real-world, open-field environment

This study assesses gender differences in spatial and non-spatial relational learning and memory in adult humans behaving freely in a real-world, open-field environment. In Experiment 1, we tested the use of proximal landmarks as conditional cues allowing subjects to predict the location of rewards hidden in one of two sets of three distinct locations. Subjects were tested in two different conditions: (1) when local visual cues marked the potentially-rewarded locations, and (2) when no local visual cues marked the potentially-rewarded locations. We found that only 17 of 20 adults (8 males, 9 females) used the proximal landmarks to predict the locations of the rewards. Although females exhibited higher exploratory behavior at the beginning of testing, males and females discriminated the potentially-rewarded locations similarly when local visual cues were present. Interestingly, when the spatial and local information conflicted in predicting the reward locations, males considered both spatial and local information, whereas females ignored the spatial information. However, in the absence of local visual cues females discriminated the potentially-rewarded locations as well as males. In Experiment 2, subjects (9 males, 9 females) were tested with three asymmetrically-arranged rewarded locations, which were marked by local cues on alternate trials. Again, females discriminated the rewarded locations as well as males in the presence or absence of local cues. In sum, although particular aspects of task performance might differ between genders, we found no evidence that women have poorer allocentric spatial relational learning and memory abilities than men in a real-world, open-field environment.

Études paléographiques et historiques sur des papyrus du VIe siècle en partie inédits renfermant les homélies de saint Avit et des écrits de saint Augustin

Comprend : Notice sur un feuillet de papyrus récemment découvert à la Bibliothèque impériale de Paris, et relatif à la basilique que Maxime, évêque de Genève, substitua vers l'année 516 à un temple payen ; Restitution d'un manuscrit du VIe siècle, mi-parti entre Paris et Genève, et contenant des lettres et des sermons de saint Augustin ; [Lettres et sermons inédits] ; Homélies de saint Avit

Haram Enoune Men Aini / Cheik Tahar, chant [acc. voc. et instr.]. Rhilt Menek Ya Khaira (suite) / Cheik Madani, chant [acc. instr.]

[Traditions. Afrique du Nord. Algérie]

Koun Men Tahchem ; Ghazali ya Ghazali / David Benarouche, chant [acc. instr.]

[Traditions. Afrique du Nord. Maroc]

Haram Enoune Men Aini ; Nesber Lallah / Cheik Tahar, chant [acc. instr.]

[Traditions. Afrique du Nord. Algérie]

Dialt Men Tagua ; Chtoukana / Rais Moulay Moh Soussi et sa troupe, chant [acc. voc. et instr.]

[Traditions. Afrique du Nord. Maroc]