The legacy of the Wernicke-Lichtheim model

Wernicke established an integrated model of the relation between higher cognitive functions and neurophysiological structure of the human brain in 1874. The previous Bouillaud/Broca view envisaged a mosiac map of centres for specific functions, each of which had no clear inter-relation with other centres or with input/output pathways, and with no theoretical explanation of how each centre operated in relation to more basic neural elements. Wernicke's model overcame these objections, and, with Lichtheim's systematization in 1885, the "Wernicke-Lichtheim model" became the standard neuropsychological theory. In this model, each normal higher function is explained in terms of an underlying neural pathway that includes the input/output systems, related functions employ portions of the pathways used for other functions, pathological syndromes are explained by reference to where in the pathway damage occurred, and previously unobserved pathological syndromes can be predicted. Development of the model at the hands of Lissauer, Dejerine, Liepmann, Geschwind, Heilman, and Ellis and Young is traced.     

The science and scientific legacy of Operation Chastise

Abstract

Operation Chastise, more often known as the 'Dambusters raids', was one of the most audacious aerial military operations of the Second World War, in that it made use of operationally untested technical innovations under extreme logistical constraints. Of particular interest is the scientific environment in which the mission was implemented. Here I review the principal scientific innovations that were necessary for the realisation of the mission. These went beyond the rotating depth charge itself. Simple but nevertheless ingenious methods for altitude and range finding were devised for low altitude flying, and the new system of two stage blue day–night flying was implemented for simulated night flying. Even drugs to combat airsickness during low altitude flight in turbulence were tested. The diverse technical expertise that was necessary for the original idea to be transformed into a logistical reality in less than three months provides a particularly lucid instance of effective scientific management in a framework of rapid technological change. I also describe an expedition inspired by these developments, which fifty years on used a dedicated low altitude night flying microlight aircraft (the Barnes Wallis Moth Machine) to catch insects over a rainforest canopy, illustrating the legacies that such missions can leave.     

Charles Bonnet: The Black Kingdom of the Nile

African Archaeological Review -     

Judging appearances: The continuing legacy of Hannah Arendt

Hannah Arendt and the Meaning of Politics. Edited by Craig Calhoun and John McGowan (Minneapolis: University of Minnesota Press, 1997), viii + 362 pp. $54.95 cloth $21.95 paper.

Hannah Arendt and Leo Strauss: German Emigrés and American Political Thought after World War II. Edited by Peter Graf Kielmansegg, Horst Mewes, and Elisabeth Glaser‐Schmidt (Cambridge: Cambridge University Press, 1995), x + 208 pp. $49.95/£35.00 cloth, $16.95 paper.

Hannah Arendt: Twenty Years Later. Edited by Larry May and Jerome Kohn (Cambridge: MIT Press, 1996), viii + 384 pp. $40.00 cloth, $17.50 paper.