The dorsal anterior cingulate cortex is a key node in the human salience network. It has been ascribed motor, pain-processing and affective functions. However, the dynamics of information flow in this complex region and how it responds to inputs remain unclear and are difficult to study using non-invasive electrophysiology. The area is targeted by neurosurgery to treat neuropathic pain. During deep brain stimulation surgery, we recorded local field potentials from this region in humans during a decision-making task requiring motor output. (...) We investigated the spatial and temporal distribution of information flow within the dACC. We demonstrate the existence of a distributed network within the anterior cingulate cortex where discrete nodes demonstrate directed communication following inputs. We show that this network anticipates and responds to the valence of feedback to actions. We further show that these network dynamics adapt following learning. Our results provide evidence for the integration of learning and the response to feedback in a key cognitive region. (shrink)

Lately, the issues of “transfer of technology” seem to have become fashionable. However, they cannot be considered at length until those of DEVELOPMENT are clarified: transfer of technology is a means, development is an end, and, if we are not careful, we risk—in all good faith—being carried away by the example of the development and techniques of the “Northern countries,” while the needs and possibilities of the “South” may be quite different.

Since 1963 almost 200 films have been made by African authors. This provides a suitable quantity of documents to permit an attempt to study them as a group. These films are the work of a hundred directors and so perhaps can allow an analysis of their personalities. But can we suppose that they represent all of Africa? This is hardly probable. The film-makers and their crews belong to the upper social levels. Educated, well-traveled on other continents, highly qualified intellectually and (...) professionally, they associate with the leading class even though their financial means may not always suffice to realize their aspirations. They belong to the intelligentsia. But, because of the educative power of film, we can foresee that they will contribute to the formation of the masses. The Africa presented in their films is not that of today but maybe that of tomorrow. (shrink)

Hume's Reception in Early America: Expanded Edition brings together the original American responses to one of Britain's greatest men of letters, David Hume. Now available as a single volume paperback, this new edition includes updated further readings suggestions and dozens of additional primary sources gathered together in a completely new concluding section. From complete pamphlets and booklets, to poems, reviews, and letters, to extracts from newspapers, religious magazines and literary and political journals, this book's contents come from a wide variety (...) of sources published in colonial America and the early United States between 1758 and 1850. As well as classics by Thomas Jefferson, John Adams and Alexander Hamilton, it contains scores of unknown and hard-to-locate items, many of which have not been reprinted since their original publication. These responses are divided into four parts covering Hume's Essays; his Philosophical Writings; his History of England; and his Character and Death. Each of those parts has a separate introductory essay, and every selection is introduced by a short headnote that sets the piece in its historical context and provides bibliographical references. Packed with new insights into Hume and American thought and culture, Hume's Reception in Early America reveals the relevance and impact of Hume on American political, philosophical, historical, religious, and aesthetic debates. (shrink)

This is a welcome reprint of a book that continues to grow in importance.