Current neuroimaging techniques with high spatial resolution constrain participant motion so that many natural tasks cannot be carried out. The aim of this paper is to show how a time-locked correlation-analysis of cerebral blood flow velocity (CBFV) lateralization data, obtained with functional TransCranial Doppler (fTCD) ultrasound, can be used to infer cerebral activation patterns across tasks. In a first experiment we demonstrate that the proposed analysis method results in data that are comparable with the standard Lateralization Index (LI) for within-task (...) comparisons of CBFV patterns, recorded during cued word generation (CWG) at two difficulty levels. In the main experiment we demonstrate that the proposed analysis method shows correlated blood-flow patterns for two different cognitive tasks that are known to draw on common brain areas, CWG, and Music Synthesis. We show that CBFV patterns for Music and CWG are correlated only for participants with prior musical training. CBFV patterns for tasks that draw on distinct brain areas, the Tower of London and CWG, are not correlated. The proposed methodology extends conventional fTCD analysis by including temporal information in the analysis of cerebral blood-flow patterns to provide a robust, non-invasive method to infer whether common brain areas are used in different cognitive tasks. It complements conventional high resolution imaging techniques. (shrink)

Dieses Buch stellt das politische Denken von Erich Fromm systematisch dar und diskutiert es kritisch. Fromms Psychoanalyse des Politischen stellt einen bleibenden Beitrag zum modernen kritischen Verständnis von Freiheit und Demokratie dar. Ausgezeichnet mit dem "Internationalen Erich-Fromm-Preis" 2001.

The body of measures promulgated to deal with the emergency of the depression is frequently linked up with the idea of a planned economy. That emergency measures have little or no essential connection with planning is the central thesis of this essay.The author discusses the four most important premises of the emergency measures : the intensity of the depression, the degree of organization reached by the country in depression, its social stratification, and its political set-up. Two emergency methods are distinguished. (...) On the one hand, an attempt is made to set the price mechanism in operation by lowering production costs, principally wages but also interest rates, rents, etc. The same adaption is aimed at by measures of state intervention which try to boost prices particularly by restriction of production and of imports. The second method, which has been used in an unprecedented manner during the present depression, attempts to stop the cumulative deflationary process by credit and monetary measures, as well as by public works.The effects of the emergency measures in some of the more important countries are discussed briefly. The author believes that a major part of these measures was necessitated by the course of events, but that their effect will be conflicting and of only short duration.Le but du travail est d'indiquer les idées les plus importantes pour comprendre et juger la politique de crise et de montrer qu'il ne saurait être question de considérer aucune des mesures prises comme un véritable plan. Par politique de crise, on entend les mesures destinées à atténuer ou surmonter une crise économique existante, par opposition à une „politique de conjoncture“ qui tend à une économie sans crise.L'auteur analyse les quatre prémisses fondamentales d'une politique de crise : profondeur de la dépression, degré d'organisation économique, structure sociale et organisation politique du pays atteint par la crise. On distingue deux méthodes employées pour combattre la crise. La politique d'adaptation, sous sa forme libérale, cherche à renforcer l'automatisme du marché, en diminuant les frais de production, etc. Les procédés d'intervention, dans la politique d'adaptation, ont pour objet l'augmentation des prix, avant tout à l'aide de restrictions de production et d'importation. La deuxième méthode, appliquée dans la crise actuelle avec une ampleur jamais encore connue, tâche d'arrêter le processus de déflation par des mouvements contraires. Les moyens principaux sont des mesures qui concernent le crédit et la monnaie, et des travaux publics. L'action d'ensemble de la politique de crise dans quelques pays importants est rapidement étudiée, à la fin de l'article. Encore que l'auteur considère une grande partie des mesures prises contre la crise comme inévitables, il tient leur action pour contradictoire et à courte échéance. (shrink)