Fornix problem: Why do lesions of the fornix, which connects the hippocampus (HF) to the medial mammillary nucleus (MMN), often cause no deficits in tasks severely affected by lesions of HF or MMN? Solution: The direct HF feedback to antero ventral (AV) thalamus (MMN [Rightarrow A: implies] AV [Leftrightarrow A: l&r dbl arrow] HF), which is blocked by MMN lesions but not fornix lesions, is sufficient for nonscene-relevant consolidation.

I agree with Revonsuo that dreaming, particularly about risky scenes, has a great selective advantage. Although the paleoamygdala system generally facilitates stress and alarm, the system which inhibits stress and alarm, initiates bold actions, and mediates learning in risky scenes is the arche, hippocampal system (Papez circuit). Because all thalamic nuclei are inhibited during sleep except arche, Papez probably also dreams in risky scenes. [Revonsuo].

Background Informed consent is a requirement for all research. It is not, however, clear how much information is sufficient to make an informed decision about participation in research. Information on an online questionnaire about childhood development was provided through an unfolding electronic participant sheet in three levels of information. Methods 552 participants, who completed the web-based survey, accessed and spent time reading the participant information sheet (PIS) between July 2008 and November 2009. The information behaviour of the participants was investigated. (...) The first level contained less information than might be found on a standard PIS, the second level corresponded to a standard PIS, and the third contained more information than on a standard PIS. The actual time spent on reading the information provided in three incremental levels and the participants' evaluation of the information were calculated. Results 77% of the participants chose to access the first level of information, whereas 12% accessed the first two levels, 6% accessed all three levels of information and 23% participated without accessing information. The most accessed levels of information were those that corresponded to the average reading times. Conclusion The brief information provided in the first level was sufficient for participants to make informed decisions, while a sizeable minority of the participants chose not to access any information at all. This study adds to the debate about how much information is required to make a decision about participation in research and the results may help inform the future development of information sheets by providing data on participants' actual needs when deciding about questionnaire surveys. (shrink)

A survey of 106 medical students assessing their interest in and attitudes to medical ethics in the curriculum is reported by the authors. Results indicate that 64 per cent of the students rated the importance of medical ethics to good medical care as high or critical and 66 per cent desired to learn more about the topic. However, in reports of patient encounters identifying ethical issues, less than six per cent of the students reported a frequency of more than one (...) such patient encounter per week. The students also demonstrated a greater awareness of more obvious ethical issues than of more subtle, less publicised issues. When asked how medical ethics should be taught, the students clearly affirmed a desire for an integrated exposure to the subject throughout the medical curriculum. Possible implications of these findings for medical education are discussed. (shrink)

Originally published in 1933, this book was written to provide the younger reader with a guide to the basic elements of economics, preparing them with the tools to earn a living and spend money in a responsible fashion. The text was based on a series of lessons 'given to pupils of ordinary ability during their last two terms in a reorganized senior school'. Illustrative figures are included. This book will be of value to anyone with an interest in economics and (...) the history of education. (shrink)

L'art, loin des habitudes qui figent tout réel élan créateur, est la jeunesse du monde. Il a tout à créer. Tout à construire, tout à proposer. Les temps de l'art mimétique comme ceux de l'art visionnaire sont révolus, pour laisser place à ceux de l'intuition. Cet ouvrage revendique ainsi la liberté de s'imposer des règles, de nouvelles règles et préconise un art de l'intuition, un art de la sensibilité, qui puisse s'exprimer avec spontanéité, une spontanéité qu'il n'est possible d'obtenir qu'après (...) un long travail. L'art ne doit plus être pensé comme une intention. Suivant ce principe, le scénario dans le récit doit être abandonné. Du point de vue de la forme, la poésie doit pouvoir mélanger dans le même poème vers libres. vers en prose, versets et alexandrins, selon le souhait du poète. De même, il faut oser une autre forme de peinture, qui ne soit ni figurative, ni abstraite, mais intuitive, née du flou ou de l'éblouissement, de la fulgurance intuitive! Franchir les frontières, à commencer par celles de l'intolérance, en faisant dialoguer et se croiser différentes disciplines artistiques, pour aller vers un espace pluriartistique, ouvre ainsi de nouvelles perspectives de création."--Page 4 of cover. (shrink)

В монографии осуществляется философско-этическое исследование параметров нравственной деятельности человека в бизнес-сфере. Для специалистов.

Some recent trends of modern biology, which seem to have a most consequential influence to the further treatment of the problem of the origin and evolution of flowering plants, are shortly reviewed in this article.Several new discoveries and observations about pollinating insects revealed to some extent the mystery of the evolution of flower types. The deciphering of the definite signs and codes of communication among social insects and the interpretation of a well developed sign language of bees belong to the (...) most remarkable achievements of modern biology indeed. Besides its revolutionary impulse in the field of animal behavior these discoveries helped to solve several problems in the evolution of flowering plants.An attempt is made in this article to classify the existing main flower types according to their evolutionary tendency from primitive → simple → radiate → protected → zygomorphic flowers In this assortment of flower types is reflected the historical development of flowering plants since their early beginning in Cretaceous period till their domination in the recent world vegetation .In this evolution of flower types is mirrored further the progressive evolvement of numerous senses of the pollinating insects. The pollinators of the Middle Mesozoicum were surrounded by primitive flower types and could distinguish but some primitive colors like white, yellow and green.Two different methods of classification of flowering plants are used in this study. A typological assortment of flowers according to their ecological characteristics is co-ordinated with the taxonomic classification of phylogenetic groups . The evolution of angiosperms can be studied more successfully, if both the typological and taxonomic trends of this groups are analyzed.Quelques nouvelles découvertes et essais sur la dissémination du pollen par les insectes sont discutés du point de vue de l'évolution des types de fleur. L'activité sélective et la stabilité de ces insectes se trouvent être des facteurs les plus conséquents dans l'évolution des types de fleurs.Deux méthodes différentes de classification des plantes angiospermes sont employées dans cette étude. Un assortiment typologique de fleurs suivant leurs caractéristiques écologiques est coordiné avec la classification systématique des groupes phylogénétiques . L'évolution des angiospermes peut être étudiée avec plus de succès si les méthodes typologiques et systématiqes sont appliquées.Es werden in diesem Aufsatz einige neue Versuchsergebnisse über die wechselseitigen Beziehungen zwischen den pollenübertragenden Insekten und der Entwicklungsgeschichte der Blütentypen näher erörtert.Es sind unter diesen Umständen zwei verschiedene Arbeitsverfahren für die Klassifikation der Blütenpflanzen angewandt worden. Eine typologische Einteilung nach den ökologischen Merkmalen und eine systematische Schilderung nach den phylogenetischen Gruppen . Die Anwendung von diesen beiden Methoden gestattet uns eine bessere Übersicht über die Entwicklungsgeschichte der Blütenpflanzen. (shrink)

Although Plato's notion of spiritual pregnancy has received a great deal of critical attention in recent years, the development of the metaphor in the Symposium has not been fully analysed. Close attention to the details of the image reveals two important points which have so far been overlooked: There are two quite different types of spiritual pregnancy in the Symposium: a ‘male’ type, which is analogous to the build-up to physical ejaculation, and a ‘female’ type, which is analogous to the (...) physical experience of pregnancy as normally understood. (shrink)